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Siena Mueller

Whether you're a solo adventurer, a couple seeking romance, or a family craving new adventures, I'm here to tailor-make your journey, ensuring it surpasses your expectations while contributing positively to the local community. From scenic nature activities to deep dives into history, culture, and cuisine, I'm passionate about sharing my love for travel with all types of adventurers.

What places and activities do you specialize in?

"I specialize in crafting tailored trip plans for solo travelers, couples, and families, catering to newcomers and experienced travelers looking for a new adventure. My favorite activities include scenic nature adventures and immersive experiences in history, culture, and cuisine."

How did you get involved in travel?

"Guided by my family's adventurous spirit, my introduction to travel began at an early age. My mom prioritized taking my sister and me on yearly trips to new places throughout my childhood, from local road trips to flights across seas. These experiences sparked my love for exploration, paving the way for my pursuit of a Bachelor's Degree in Sustainable Tourism Development. During a study abroad program in Greece, focused on community development and tourism in the Mani peninsula, I fell in love with the country's rich culture and gorgeous landscape. With 20 countries under my belt, each journey adding to my wealth of experiences, I continue to be inspired by the transformative power of travel."

Please share a unique travel experience you will never forget.

"I have been so lucky to have had many impactful travel experiences - my pro tip is to keep a travel journal to help you remember the details of your adventures! One particular adventure stands out: a hike from Milia to the Panagia Giatrissa Monastery. Trekking through lush green mountains, we discovered hidden creeks and funky insects. We finally reached the top, after getting beautifully lost for an additional mile or so, and soaked in the inspiring view of the mountain range. There, a clergy member shared the land’s deep-rooted history over Turkish coffee. Returning to Milia, we shared a meal with locals, tasting some of the finest olive oil and exchanging stories that bridged generations. This experience perfectly encapsulates my approach to travel: a harmonious blend of nature exploration and cultural immersion, connecting with locals who enrich our understanding of the places we visit."

Siena is part of the following groups: Australia Travel Agents, Greece Travel Agents
Top itineraries and travel advice

Favorite experiences

Samaria Gorge Guided Hike

Experience a full-day guided hiking tour through Europe's longest (and Crete's most popular) river gorge, Samaria Gorge. As one of the island's natural wonders, you'll enjoy incredible views of the rushing river, rocky mountain peaks, and Crete's scenic countryside. Along the way, your local...

Airlie Beach Sunset Sailing Experience

Embark on a luxurious adults-only sunset sailing experience in the Whitsundays. After a warm welcome and safety briefing, the journey begins from Coral Sea Marina at Airlie Beach, where you'll enjoy complimentary drinks and an antipasto spread. Take in the sights, learn about local history,...

Sea Cave Kayaking Adventure

Discover the southern coastline and caves of Naxos by sea kayak with a local guide. As you paddle, enjoy panoramic views of neighboring Cyclades islands and visit Rhina Cave, where you'll spot bats and birds flitting among the stalactites. Afterward, spend some time relaxing on a secluded beach...

Recent trip reviews for Siena

Sienna and staff were extremely helpful. When...
Greece | May 27 - Jun 6, 2026

L
Linda
Miami, FL | Reviewed on Jun 07, 2026
Sienna and staff were extremely helpful. When there was a situation it was taken care of
The team went up an above solving situations
Would definitely use Kim Kim for future trips
Read more

Sienna and staff were extremely helpful. When there was a situation it was taken care of
The team went up an above solving situations
Would definitely use Kim Kim for future trips

Hotel Reviews
Ducato di Oia Boutique Hotel
Santorini

The room was like a cave. Access to room and hotel was extremely difficult. Staff was helpful There was no central location for breakfast

Location
Staff
Cleanliness & Comfort
Liana Beach Hotel & Spa
Naxos
Authenticity & Character
Location
Staff
Cleanliness & Comfort
DOM Boutique Hotel
Heraklion
Authenticity & Character
Location
Staff
Cleanliness & Comfort
Monastery Estate Venetian Harbor
Chania
Authenticity & Character
Location
Staff
Cleanliness & Comfort
Sofitel Athens Airport
Athens
Location
Cleanliness & Comfort
Activity Reviews
Private Acropolis Discovery Walk
Private Acropolis Discovery Walk
Athens

Our guide was informative. She was easy to understand and explained everything in detail

Private Guided Walk Through Old Town Chania
Private Guided Walk Through Old Town Chania
Chania

Goldy was informative and interesting. Great guide

Knossos Palace Experience
Knossos Palace Experience
Greece

Out guide was very interesting and informative

E-Bike Experience with Olive Mill & Farm Visit with Lunch
E-Bike Experience with Olive Mill & Farm Visit with Lunch
Naxos

I was unable to control the e bike. Our guide took us instead on same tour using her own car. This was above what she had to do

Private Villages Exploration with Independent Akrotiri Visit
Private Villages Exploration with Independent Akrotiri Visit
Santorini

George our driver and guide was exceptioal

Local specialist: Siena Mueller

Kudos to Kimkim for planning a fantastic trip to Greece!
Greece | May 28 - Jun 4, 2026

Marsha
Marsha E.
Atlanta, GA | Reviewed on Jun 06, 2026
My son and I thoroughly enjoyed our trip to Greece. Both Siena and Lea were wonderful to work with, curating a fantastic trip according to our wish list, following up to ensure all of our questions were answered, and checking in during our vacation to confirm that all was well. We enjoyed each and every activity and location as they were all varied and enjoyable. Our absolute favorites were the Ancient Athens Acropolis Walk (the guide was very engaging and informative), the Naxos Old Town... Read more

My son and I thoroughly enjoyed our trip to Greece. Both Siena and Lea were wonderful to work with, curating a fantastic trip according to our wish list, following up to ensure all of our questions were answered, and checking in during our vacation to confirm that all was well. We enjoyed each and every activity and location as they were all varied and enjoyable. Our absolute favorites were the Ancient Athens Acropolis Walk (the guide was very engaging and informative), the Naxos Old Town Food Walk (the guide was perfectly delightful), and the Sunset Caldera Catamaran Cruise (the crew was outstanding!). Having said that, I truly loved all of the other activities, too. The self-guided hike from Fira to Oia (in Santorini) was a great challenge with the best of views and the ultimate satisfaction upon completion. Thank you a million times for making our mother-son trip the absolute best it could be. I will recommend Kimkim to all of my family and friends, and will get in touch for another trip in the future.

Hotel Reviews
Athens Manor Houses
Athens

Well appointed hotel, situated in the midst of a bustling area of great restaurants and shops.

Authenticity & Character
Location
Perfect location to walk to restaurants and shops
Staff
Very friendly staff
Cleanliness & Comfort
Melidron Hotel & Suites
Naxos

Very nice hotel with perfect accommodations.

Authenticity & Character
Layout of the beds in the room was quite unique, unlike anything we would see at home, and that's why we loved it.
Location
Just a 5-minute walk to the beach and loads of restaurants.
Staff
The person at the reception desk was so friendly and efficient. She arranged multiple transfers for us to the Naxos Port and back, all done without a hitch.
Cleanliness & Comfort
The room was maintained very well.
Kastro Suites Santorini
Santorini

Unique hotel room with all the amenities.

Authenticity & Character
We loved that it felt nothing like home. A truly great experience.
Location
We loved the fact that the hotel was perched on a cliff overlooking the caldera. We also loved the convenience of a restaurant right above us. The free breakfast for two was so delicious, made memorable by a group of donkeys walking past us.
Staff
Very prompt and friendly!
Cleanliness & Comfort
Very well maintained.
Activity Reviews
Ancient Athens Acropolis & Mythology Walk
Ancient Athens Acropolis & Mythology Walk
Athens

It felt like a dream when we reached the top of the Acropolis and saw the Parthenon.

Quality of Experience
Guides, Drivers and Staff
The tour guide was very knowledgeable and engaging.
Old Town Food Walk
Old Town Food Walk
Naxos

Walking thru the old town of Naxos was a great experience, tasting a host of specialties and learning about the culture.

Quality of Experience
Food
Guides, Drivers and Staff
Our guide was delightful, really putting a lot of effort and care to ensure each member of our tour group was happy.
Transport
Self-Guided Hike From Fira to Oia
Self-Guided Hike From Fira to Oia
Santorini

I don't think we'll ever have another hiking experience like this one. It was long and a bit challenging for this 63-year-old but the satisfaction in completing it was amazing. My son also did the little detour to the Skaros Rock, which he absolutely loved.

Quality of Experience
Sunset Caldera Catamaran Cruise
Sunset Caldera Catamaran Cruise
Santorini

So wonderful to be out on the water, in the Caldera. Loved the numerous stops and the opportunity to snorkel. The food was amazing and the sunset at the end was spectacular.

Quality of Experience
The crew members on the catamaran were outstanding. Very communicative, attentive, and experienced.
Food
Guides, Drivers and Staff
Transport
All drivers were friendly. It was a bit hectic at the end of the evening, trying to find our shuttle van, as so many people were scrambling to find their rides. Just pay close attention and keep asking questions until you find your ride.
Local specialist: Siena Mueller

Flawless trip to Greece!
Greece | May 29 - Jun 4, 2026

Cammie
Cammie G.
Chicago, IL | Reviewed on Jun 05, 2026
My husband and I had a wonderful time in Greece. Siena with KimKim asked all the right questions and curated a trip special to us. We don't like big groups and Siena found us adventurous private tours throughout Greece. All of our guides were super, but George with YourGuide.crete went above and beyond! He guided us through the Kourtaliotiko Gorge Hidden Waterfall & River Trek which was AMAZING! He even took us to our next town after the adventure, saving us 3 hours in the car. All of... Read more

My husband and I had a wonderful time in Greece. Siena with KimKim asked all the right questions and curated a trip special to us. We don't like big groups and Siena found us adventurous private tours throughout Greece. All of our guides were super, but George with YourGuide.crete went above and beyond! He guided us through the Kourtaliotiko Gorge Hidden Waterfall & River Trek which was AMAZING! He even took us to our next town after the adventure, saving us 3 hours in the car. All of the hotels, hand-picked by Siena were outstanding. The transfers were timely and very comfortable, providing private shuttle to and from locations. It was a dream vacation and flawless. Highly recommended!

Hotel Reviews
Casa Delfino
Chania, Crete

Beautiful hotel in Old Town Chania. So much charm and character in this hotel. Right along the waterfront and lots of shopping and restaurants.

Authenticity & Character
Location
Staff
Cleanliness & Comfort
xenodocheio Milos
Athens

Within walking distance to the Acropolis. Lots of shopping and resaurants nearby. Very modern and wonderful staff.

Authenticity & Character
Location
Staff
Cleanliness & Comfort
Local specialist: Siena Mueller

Great experience
Greece | May 23 - Jun 1, 2026

Karen
Karen S.
Ashburn, VA | Reviewed on Jun 04, 2026

We worked with kimkim to plan a trip to Greece for our 30th anniversary. The planning was easy and the trip went as smooth as could be. We’re already planning our next trip with kimkim. Highly recommend.

Local specialist: Siena Mueller

Great Trip
Greece | May 16 - May 24, 2026

Matthew
Matthew T.
Chicago, IL | Reviewed on May 27, 2026
We had a great trip to Greece. All the places we stayed and people we encountered were very helpful. We had a very fun time. Read more

We had a great trip to Greece. All the places we stayed and people we encountered were very helpful. We had a very fun time.

Hotel Reviews
The Foundry Suites
Athens

Really nice place. Super friendly staff. Rooftop patio was great at night. For a hotel in Europe, the bathroom was pretty nice. The stairs up to the bed would have been difficult for someone that was disabled. Overall, we loved this place. Best hotel of our trip.

Authenticity & Character
Location
Staff
Cleanliness & Comfort
Ducato di Oia Boutique Hotel
Santorini

Great location, couldn't be beat. The hot tub/warm tub was a nice touch. The layout of the room was like a cave, which was cool and unique but also kind of weird. It was a bit challenging to lug the suitcase around the room. Very helpful and nice staff.

Authenticity & Character
Location
Staff
Cleanliness & Comfort
Paros Comfy Suites
Naousa Paros

Grea room, very comfortable. Pretty view. The beach was rocky, not sandy. It is not in town so a car or private transfer was needed to get to places. If you want to be out of town a bit this place was perfect. Super helpful staff.

Authenticity & Character
Location
Staff
Cleanliness & Comfort
Local specialist: Siena Mueller

Siena and Lea were great at helping us book a...
Greece | May 13 - May 23, 2026

Joey
Joey R.
Manhattan, NY | Reviewed on May 26, 2026
Siena and Lea were great at helping us book a great itinerary of fun exploration and relaxation! We will definitely use the again in the future! Read more

Siena and Lea were great at helping us book a great itinerary of fun exploration and relaxation! We will definitely use the again in the future!

Hotel Reviews
Adorno Beach Hotel & Suites
Mykonos

Nice, peaceful hotel. We had the BEST view from our balcony of the beach. Close to great restaurants in walking distance, and a short taxi ride to downtown. I would recommend this place and suite to future travelers.

Authenticity & Character
Location
Staff
Cleanliness & Comfort
The Foundry Suites
Athens

perfect location and the rooftop was amazing!

Authenticity & Character
Location
Staff
Cleanliness & Comfort
Ducato di Oia Boutique Hotel
Santorini

Great location with a lovely hot tub! The staff were super helpful! Definitely in a place of SUPER HIGH tourism though, and need assistance with luggage on stairs and finding the hotel initially.

Authenticity & Character
Location
Staff
Cleanliness & Comfort
Activity Reviews
South Coast E-Bike Adventure
South Coast E-Bike Adventure
Santorini

Our absolute FAVORITE excursion. Katarina was amazing, a great way to see so much of the island and villages, and get away from the tourist crowds. Would recommend this to anyone, and the e-bikes made it very relaxing!

Quality of Experience
Guides, Drivers and Staff
Transport
Self-Guided Lycabettus Hill Visit
Self-Guided Lycabettus Hill Visit
Athens

more strenuous than we expected, but in a good way! Worth it for the view, and made for a great welcome to Athens!

Quality of Experience
Ancient Athens Acropolis & Mythology Walk
Ancient Athens Acropolis & Mythology Walk
Athens

A must for visiting Athens to learn about the history!

Quality of Experience
Guides, Drivers and Staff
Chora Food & Culture Walk
Chora Food & Culture Walk
Mykonos

One of our favorite excursions. Loved that it was just us two and our guide. He was amazing (Lorenzo). Food was great, learned lots about Mykonos.

Quality of Experience
Guides, Drivers and Staff
Transport
Delos & Rhenia Sailing Cruise & Lunch
Delos & Rhenia Sailing Cruise & Lunch
Mykonos

Loved the smaller group. Definitely colder for May, would suggest bundling up more than we did! But great trip to Delos, and Rheas with AMAZING lunch on board.

Quality of Experience
Food
Guides, Drivers and Staff
Transport
Traditional Vineyards & Wine Tasting Experience
Traditional Vineyards & Wine Tasting Experience
Santorini

Our guide was very knowledgeable, we learned SO much about Santorini. A good way to get away from the heavy touristic area of Oia.

Quality of Experience
Guides, Drivers and Staff
Transport
Sunset Caldera Catamaran Cruise
Sunset Caldera Catamaran Cruise
Santorini

The ride itself and the sunset were beautiful. The food was SO GOOD. However, it was a pretty large group and we couldn't get off to walk on the beaches. A great experience, but a smaller group might have been nice.

Quality of Experience
Food
Guides, Drivers and Staff
Transport
Local specialist: Siena Mueller
Siena
Siena Mueller
Local specialist in Kimkim HQ | Replied on May 27, 2026

Thank you so much, Joey! I'm so happy you & Michael got to experience the magic of Santorini, Mykonos, and Athens, and that the hotels were a great fit (that view from the Adorno Beach balcony sounds absolutely stunning). We totally understand that the Oia logistics can be a bit of an adventure, so we'll keep that in mind for future recommendations! We can't wait to help plan your next trip β€” Greece will always have more to explore!

Stellar Service
Greece | May 9 - May 17, 2026

M
Marnie Y.
Ashburn, VA | Reviewed on May 24, 2026

The KimKim team was amazing to work with from planning to in country support. They guided us to great hotels, excursions and transportation while helping us stay within the budget we had set. I highly recommend KimKim for planning your dream vacation!

Local specialist: Siena Mueller
Siena
Siena Mueller
Local specialist in Kimkim HQ | Replied on May 27, 2026

Thank you for your kind words, Marnie! Planning your double-birthday trip was so much fun, and I'm so happy to hear all the hotel, location, and experiences felt special! I hope to plan your return trip to Greece in the future. πŸ‡¬πŸ‡·βœ¨

We had a fabulous trip to Greece. I had dream...
Greece | May 9 - May 18, 2026

J
Joanie S.
Atlanta, GA | Reviewed on May 21, 2026
We had a fabulous trip to Greece. I had dreamed of traveling there since I learned about Greek History in 6th grade. I had high expectations and I was not at all disappointed. First of all, our transport drivers were on time throughout the trip, and they were professional and personable. Our hotels were all comfortable and in locations where we could walk to restaurants, etc. We were especially impressed with ALL of the staff at the Melidron in Naxos. From the front desk to the young bar... Read more

We had a fabulous trip to Greece. I had dreamed of traveling there since I learned about Greek History in 6th grade. I had high expectations and I was not at all disappointed. First of all, our transport drivers were on time throughout the trip, and they were professional and personable. Our hotels were all comfortable and in locations where we could walk to restaurants, etc. We were especially impressed with ALL of the staff at the Melidron in Naxos. From the front desk to the young bar tender, to the women who prepared the homemade breakfast to the drivers, they were always there to help with suggestions and advice, they seemed as sad to see us leave as we were to say goodbye to them. We initially wondered if it would have been a better choice to stay in/near Naxos Town, since we ended up there at some point during each day, and didn't spend time on the beach except to walk by for pretty views a couple of times. But later we decided it was nice to stay in a more peaceful area that we got to know a bit better. The Santorini hotel view was spectacular, Wow!

We enjoyed all of our tours. A few of our guides were so impressive: Evita(I think that was her name) who led us through the Acropolis was outstanding, both with her knowledge of history and adapting our walking route for those who were having a bit of trouble with physically walking for long periods. Elizabeth in Naxos was fantastic, and George in Santorini was a very good guide as well. Our driver to Delphi, Nancy, was not a licensed guide, but we learned so much from her on the trip. She had lots of knowledge about Greece to share with us. We wanted to do a day trip outside of Athens and followed Siena's advice to go to Delphi. I don't think any of us knew anything about that place so I can't say we were excited, but it turns out we all really enjoyed learning about the history. Our guide there, Theo, was very knowledgeable and shared so much information about that city. I will mention that later we all commented that he was not so easy to understand, we all felt like we had to focus very intently to understand what he was saying. He seemed to talk very quickly and did not annunciate as clearly as our other guides. But we all really loved that day, including driving through two really cute towns up there, and the restaurant for lunch. I would love to go back there one day and explore the towns. We were a bit skeptical about how the marble carving experience in Naxos would be, it turns out that we all enjoyed a very different activity very much. We were also worried we would be very cold on the catamaran trip, after the weather report showed cool temps with lots of wind, but overall, it was sunny and quite comfortable until the sun went down.

The whole kimkim team was incredible. Siena listened to our needs and planned and a wonderful trip, willing to change things as needed. There were a few times we had questions while we were away, when we knew it was the middle of the night in the US. Each time somebody got back to us within minutes. It was truly amazing how quickly we would get a reply, even in the middle of the night on a weekend. We truly cannot hesitate to recommend kimkim to anyone, they make traveling so comfortable and easy. We would be happy to come back to any of these places again but there is also so much more of Greece to see. Can't wait to plan our next trip, the next one for us will be Croatia and Montenegro, about a year from now.

Local specialist: Siena Mueller
Siena
Siena Mueller
Local specialist in Kimkim HQ | Replied on May 21, 2026

Joanie, I absolutely loved working with you! Thank you for sharing all the photos throughout your trip. I felt like I was there with you all! I'm so happy our team delivered on your expectations, and you loved our vetted guides, hotels, and drivers. The Melidron Hotel & staff are especially lovely, I fully agree! I hope we get to work together again, but in the meantime, enjoy all of these Greece memories! πŸ‡¬πŸ‡·πŸ•ŠοΈβœ¨

Wonderful trip to Greece!
Greece | May 9 - May 18, 2026

J
Jeff S.
Atlanta, GA | Reviewed on May 20, 2026
All I can say about our trip to Greece is that it was wonderful . . . The Kim Kim Team was amazing and truly made a difference all the way through β€” from itinerary development, to planning and logistics, and responding to questions and issues along the way. Regardless of time β€” day or night β€” Kim Kim responded very quickly and was always helpful. All of the logistics from the US to Athens to Naxos to Santorini were flawless!! With all of the drivers and guides and passes/tickets... Read more

All I can say about our trip to Greece is that it was wonderful . . . The Kim Kim Team was amazing and truly made a difference all the way through β€” from itinerary development, to planning and logistics, and responding to questions and issues along the way. Regardless of time β€” day or night β€” Kim Kim responded very quickly and was always helpful. All of the logistics from the US to Athens to Naxos to Santorini were flawless!! With all of the drivers and guides and passes/tickets involved in the trip it was amazing that everything worked exactly as planned. The Kim Kim app with the itinerary, contact names and phone, tickets etc along with the chat feature was tremendously useful. The hotels were great, the drivers were prompt and courteous, the guides were knowledgeable and very easy/flexible to work with. I can’t say enough good things β€” probably the best trip that we’ve ever taken and Kim Kim was a key contributor. Will definitely use them in the future.

Local specialist: Siena Mueller
Siena
Siena Mueller
Local specialist in Kimkim HQ | Replied on May 21, 2026

The "best trip you've ever taken" is the highest reward we could ask for, Jeff! Thank you so much for sharing your experience, and I'm especially glad you enjoyed using our new app! It was so much fun working together, and I hope you have another trip of a lifetime with kimkim in Croatia next year! 🀩

Athens/Paros/Santorini, Greece
Greece | May 9 - May 17, 2026

Kathleen
Kathleen C.
Ashburn, VA | Reviewed on May 20, 2026
From the very first interaction I had with KimKim, I was very pleased. The right questions were asked to create the perfect plan to explore Greece. Every detail discussed about the trip played out flawlessly each day. The travel team was also very responsive before and during the trip (we had to change one of our excursions) and it was cared for and our itinerary was updated in less than an hour! This was a trip of a lifetime and I am so grateful that KimKim made my dream a reality. Read more

From the very first interaction I had with KimKim, I was very pleased. The right questions were asked to create the perfect plan to explore Greece. Every detail discussed about the trip played out flawlessly each day. The travel team was also very responsive before and during the trip (we had to change one of our excursions) and it was cared for and our itinerary was updated in less than an hour! This was a trip of a lifetime and I am so grateful that KimKim made my dream a reality.

Activity Reviews
 From Olive Groves to Vineyards: A Culinary Journey Through the Peloponnese
From Olive Groves to Vineyards: A Culinary Journey Through the Peloponnese
Athens
Quality of Experience
Guides, Drivers and Staff
Transport
Morning Caldera Catamaran Cruise
Morning Caldera Catamaran Cruise
Santorini
Quality of Experience
Food
Guides, Drivers and Staff
Transport
Traditional Vineyards & Wine Tasting Experience
Traditional Vineyards & Wine Tasting Experience
Santorini
Quality of Experience
Guides, Drivers and Staff
Transport
Local specialist: Siena Mueller
Siena
Siena Mueller
Local specialist in Kimkim HQ | Replied on May 21, 2026

Thank you so much, Kaylee! It was an honor to plan and support you on such a special trip! I'm so happy you loved Greece as much as we do. πŸ’›βœ¨