Rainforest Tree House w Hot Springs

Two days like a dream !
The nest into the trees is perfect to stay in phase with the nature !
Kathy and Bernie had been perfect hosts !
Thank you again.

We had the great pleasure and the real treat of spending 3 nights at Bio Thermales last week. Our hosts Kathy and Bernie were wonderful, immensely knowledgeable and responsive to all of our needs.They have built a truly marvelous and unique property situated conveniently between Muelles and Aguas Zarcas, an hour from the chaos of La Fortuna and Arenal.The Cabinas are comfy and fully equipped with all the kitchen wares and appliances you'd need (be sure to bring all your food and supplies). We stayed in the treehouse - 31 steps up to the most amazing views of the property out front and the jungle out back from the 360 degree balcony. It is capped by a loft wrapped in the most amazing windows I've ever seen! The centerpiece of the place of course are the stone crafted natural hot springs and pools which beckon you all day and all night long. Springing right out of the mountains behind the Cabinas, the mineral waters are just perfect with a range of temperatures to satisfy anyone's preference. We are definitely going to stay there again!

The Treehouse, the hot spring pool in the rainforest are really great. In the morning i saw 8 monkeys "working" in the big tree, while i was relaxing in the hot nature pool. Its an extraordinary place, but dont go there on weekends. Biothermales is also a popular place for Tico families and its very crowded (more than 200 people around the threehouse having a barbecue and spending a good time there).
From Monday to Friday its a wonderful quiet place.

We stayed at the tree house. Had a great experience there. Kathy and Bernie address incredible hosts. Kathy went the extra mile, and then some. She helped me arrange most of my itinerary while at Costa Rica. She even called me before traveling to give me some tips on my stay.

My advice to travelers, which Kathy also gives, is try to come on weekdays. More availability to hot springs that way.

Thanks, will come back again if I'm in the area!

Kathy and Bernie were such wonderful hosts and were so helpful and welcoming. The treehouse is absolutely beautiful - definitely our favourite place that we stayed during our 6 weeks in Costa Rica. The creativity that has gone into designing the place is truly incredible, Bernie and Johan are really talented guys! My boyfriend and I stayed here for a week and there is so much to do in the surrounding area I would recommend at least a week minimum. Not only are there the great hot springs on site (which we used every day), but you are close enough to loads of other interesting places. Even though Arenal and Fortuna are close by, we would also thoroughly recommended some of the less explored attractions too. One amazing place we visited was the cloud forest of Juan Castro Blanco National Park - totally off the beaten track and wild, but beyond beautiful! It looks like something out of a fairy tale or off The Lord of the Rings. Volcan Poas is also definitely worth a visit, but make sure you go on a clear day and very early in the morning to get the best views. In terms of places that are close by, there is a river just down the road which has an excellent swimming hole and beautiful bright blue clear water. Definitely bring a car as getting around would be tricky without one, and make sure you have a meal at a Soda while you are in the area (there's one on the way to the Rio Celeste that is incredible!).
We had such a good time exploring the area, and I would definitely recommend staying at the treehouse. You will not find a more welcoming, friendly place than staying with Kathy and Bernie.

Kathy and Bernie were the ultimate hosts. Kathy and I exchanged a number of emails before even leaving the U.S. in which she helped me navigate our trip planning. Her directions were wonderfully helpful and much needed. Upon arrival she gave us a thorough tour of the facilities and layout of the land, allowed us to exchange money and arranged for the first couple of meals to be provided by neighbors. We couldn't have asked for a more magical experience staying in the treehouse, going to sleep with sounds of a gurgling river , birds, insects, etc. in the background. The hotsprings pools were exquisite....hot, private, clean, accessible and masterfully engineered. Thanks folks for the great experience! Annie & Eric

We enjoyed three exciting days of fun living in the tree house and soaking in the thermal hot springs. Bernie and Kathy have done a great job of turning the area into an wonderful place to relax and literally taking relaxation to a new level.
Anne and I drove to La Fortunate, hiked to the falls, went to a butterfly conservatory and had some great meals while living in the tree house. Thanks much for the hospitality and adventure as we experience the many beauties that CR offers!

Kathy and Bernie were great hosts and we really enjoyed our stay.

We stayed at the treehouse for one night and wish we could have extended our stay. The outdoor thermales were so relaxing. It was a great way to start the morning. Kathy and Bernie were gracious hosts. I will certainly recommend a visit to Bio Thermales to friends who visit Costa Rica in the future!

We had an amazing time at Biothermales. What a place! We stayed in the treehouse and really enjoyed it. The baths were fantastic. Kathy took a lot of time to orient us to the place and the area. Thanks for everything and we will see you next time.

Very nice, comfortable and clean lodge. We really enjoyed the hot springs in the early morning when other visitors can not enter, especially the ones in the rainforest! Also good breakfast and dinner. We definitely would go back!

Heidi&Domien

We had an absolutely splendid time here. The hot springs were very relaxing, especially at night after a long day of exploring. The casita was charming. You can tell from the details that this is a labor of love for Kathy and Bernie: hand-carved doors, bed constructed with felled local wood, hand-engraved bathroom tiles. It feels like you are never more than an arm's length away from something handmade right there on-site.

We got to see some cool wildlife during our stay too. A keel-billed toucan landed in a tree no more than 25 m away from me while eating breakfast on the casita porch!

Thanks again! Hope to be back soon.

-Jay and Carmen

P.S. We both liked the catering and recommend it to future guests. The price is very reasonable considering that it is delivered by motorbike to your doorstep. Very tasty!

I give a five star rating regarding my experience. I was quite ill with a toothache following some dental surgery. Kathy went out of her way to take care of me. The soak in the hot springs water on the property was wonderful. I wouldn't have asked for a more kind and caring person. The property is beautiful!
Muchas gracias!

Our experience at Biothemales was simply wonderful. Kathy and Bernie are extraordinary people and their place reflects this. It is a small piece of paradise with simple, beautiful casitas and delicious, clean hot and cool pools, as well as swimming pools dotted through their forested area. The road in is rough but drivable. They open Biothermales to locals on the weekends and it becomes noisier and filled with families having great times. I probably would avoid the weekend on a return trip, although it was sweet and special to watch.

The hot springs were a perfect start to our holiday. Kathy and Bernie are wonderful hosts and have great recommendations. I would insist on adding this to your itinerary while in Costa Rica.

Our Stay at the Rainforest Casitas was great. Kathy and Bernie were so helpful and so kind and made our stay so comfortable. We could tell they take pride in their casitas and hot springs and it reflects with their service. We would definitely stay here again and maybe splurge and go for the tree house:) If you are looking for something private and tranquil this is the place.

Wir hatten tolle drei Tage in den Bio Thermales. Kathy, Bernie und Johan haben ein kleines Paradies erschaffen. Die Hot Springs und die ganze Anlage sind sauber gehalten. Das Catering von Shirly ist grosszügig und typisch Tico, sehr lecker.
Über Kathy haben wir mit Frank einen grossartigen Guide vermittelt bekommen. Wenn man etwas über die Region erfahren will, muss man Frank buchen. Er ist zudem ein excellenter Begleiter, Fotograf und auch Gesprächspartner.
Wir können einen Besuch in den Bio Thermales nur empfehlen. Danke Kathy, Bernie, Johan und Shirly!
Eric und Marina

Our stay at the rainforest casita was absolutely wonderful. Kathy & Bernie were such wonderful hosts. The location was pretty easy to get to with Kathy's specific directions. The place gets pretty busy on weekends (so plan to go into town on those days) but having the hot springs to ourselves at night was the best. If you're planing on being on your computer the entire time, the wifi only worked for us by the reception area, but other than that, the entire staff were so friendly and helpful, so was their dog Pepe! We will definitely miss our casita.

Kathy and Bernie are great hosts. Kathy was really helpful with travel plans before we got there. She answered so many of my emails with great info about the area and CR in general.

We stayed in the Mariposa for a week. It's a little out of the way but it's a bit of paradise in the middle of the rainforest and a great place to unwind. The pools Bernie made and the grounds are fabulous! A little busy with locals during the day, especially Sundays, but not too busy to bother you. In the mornings you can sit outside with your coffee and enjoy the peace and quiet and the wildlife, and the place is all yours after 6 pm. Sit in the gorgeous natural thermal pools by yourself or maybe with guests from the other two cabins, no one else - 9 or 10 to choose from, hot to cool. Bring a small flashlight or headlamp if you can - helped to get to the pools.

The casita is fantastic. Good kitchen, big bathroom and shower, air conditioning, queen bed, all very clean. We heard howler monkeys, saw an iguana, hummingbirds, fireflies, all kinds of other birds, all from our porch. The Mariposa is the best casita - has the biggest swing.

Grocery stores and gas stations are close by, you can have meals delivered by Shirley, good food near by, everything you need.

If you can make it work, DO go on the slow river float and rainforest hike with Humberto Arias! It was the most fabulous day of our two-week trip. Kathy can arrange that.

Big thumbs up for this spot, so happy that I found it - would stay there again for sure - we loved it!

Thank you so much to Kathy and Bernie and everyone that helps them out!

In our month visit in Costa Rica, we had the opportunity to be immersed in true paradise. Fortunately for us, we planned a weeklong stay at the Bio Thermals with owner-operators, Kathy and Bernie. No website review or boast can prepare one for the genuine hospitality, gorgeous jungle surroundings, healing and relaxing rainforest hot springs and the cozy, comfortable casitas in which we were so fortunately lodged.
There is much to do here in this tucked away paradise near La Palmera. We took advantage of the many hot springs scattered through the 30+ acre property. They are built as if part of the natural environment, which truly gives the feeling of oneness while bathing in the mineral-rich healing waters. After a day trip in Quesada ( a nearby town), La Fortuna the volcano town, or just a day out exploring the incredible green mountain trails, you can come back and at whatever time submerge your tired body into the pleasantly warm hot spring. From the pools to choose from, I especially enjoyed the one “primitive pool,” as I call it, which is nestled in between jungle trees, the views alone from the hot pools are pretty picturesque. The landscape and design is carefully and artistically laid out. The house we stayed in was hand crafted by the owners, and engraved with such delicate design to detail. We saved a lot of money by utilizing their kitchen and kitchen ware here.
We really enjoyed making our Costa Rican inspired meals here and then dining outside to our much beloved patio space. Hammocks, swinging benches and beautifully crafted wooden chairs assisted in keeping you comfortable while enjoying the natural beauty outside. The diversity of plant life is truly remarkable here in the jungle. What a pleasant escape watching butterflies, colorful hummingbirds and even the occasional chicken to greet the new day!
We couldn’t be more accommodated, and kindly hosted by the owners, and their assistants at the Bio Thermals. They are quick to help out with any needs or curiosities you may have as well as offer incredible recommendations for the “must see’s.” They helped our family plan a wonderful river rafting tour with a local biologist who had rich knowledge of the land and wildlife. They are the true definition of “Buena gente,” and we were so lucky to have had such a great experience here at The Bio Thermals! As a woman who loves to travel (and not lavishly) I highly recommend this place. Make sure this Costa Rican getaway is in your plans, you will be so happy you did!!
Cassandra Noboa, Austin, TX

What a beautiful, relaxing, and serene vacation getaway! Imagine waking up in the morning and stepping out your door to soak in a natural hot spring surrounded by the beauty and sounds of the lush Costa Rican rainforest. My aching muscles were extremely grateful! The casita is very comfortable and a nice size that boasts a beautiful, hand-crafted wooden four-post bed and decor. Kathy and Bernie are wonderful hosts, very friendly and hospitable. If you need a place to unwind and rejuvenate, this is the place to come!