Nice rangerstation in the middle of the national park. Food could be little better and internet area too. And lights and internet was turned of at 9 pm. Very nice trails, but you need rubberboots and mosquito repellent

We hiked in and out from Carate. The hike is definitely worth the effort. Sirena Station accommodations are rustic but comfortable. The bunkhouse is definitely close quarters, but people are respectful and with lights out at 8pm it gets pretty quiet. Most people start getting up at 4:30 for hikes, so don't expect to sleep in. Food is tasty and portions are huge. You can buy fruit popsicles, ice cream, and souvenirs in the small store. The large porch is a nice place to sit and listen to the sounds of the jungle. Plenty of clotheslines to hang wet clothes. Showers are a pipe coming out of the wall but they get you clean and refreshed. I wouldn't want to come with kids under 12, but if your kids are hardy, they'll be fine. People come from all over (mostly Europe and Costa Rica) and it's nice to hear the range of languages. Be sure to bring sandals because they won't let you wear your boots inside.

Tldr: great place if you just want to see animals, not so much if you want a raw untamed jungle feeling. Giving it 4 stars because I think the negative feeling has more to do with my expectations than anything else but this review might help set other people's expectations. As a nature lover I have to say I was a bit disappointed with the park itself. The whole experience felt very underwhelming and tourist-y and I didn't feel like I'm in a raw untamed jungle in the middle of nowhere, just like I'm walking in a forest seeing some cool animals. Maybe it's the wide, well defined trails that ruined the immersion, or the large amount of people, or maybe it's because the place is built around the less dense jungle areas by design. The place has basically 3 main trails, excluding the trails that leave the area. Each can probably be done in a couple of hours if you don't stop every second to take picture of another monkey. some of the trails split up a bit here and there but in each hike we basically had to choose a trail that we already did before and hope that we see new animals or the same animals in different positions (we visited the same sleeping tapir 3 times just to see it changing it's sleeping position). At first we thought our guide just didn't know the other trail but pretty much every group did the same. That being said, it's definitely a good place to spot wild animals. We saw 3 types of monkeys, a tapir, a crocodile, a caiman, sloths, 2 anteaters, coatis, agoutis, and a huge variety of birds (probably forgot something but you get the idea). I did the tour with 1 night in sirena station, we saw most of the unique species in the first few hours, but we needed the extra day to fill in some additional checkboxes, whether or not it's worth the time and price is up to you. The place is somewhat family friendly with relatively small children doing the hikes, I guess I should have known that it implies a relatively simple and tame experience. It's possible that if you do the hike out of the station instead of taking the boat the experience would be different, I didn't get the chance to do it.

A very special place. More or less surrounded by jungle. The place itself has showers, bunk beds a small store, kitchen where they make your dinner and lunch etc. The beds have mosquito nets around them. You are in one open "room" with everyone else so yes, prepare for snoring. Usually everyone is in bed by 8pm and next morning at 4.30 the tour starts again to see the sunrise and spot swimming Tapirs. Overall, we enjoyed our time in Corcovado national park. You should definitely stay 1 night. It is expensive with around 370$ but it's worth it. 1 day is too short, you return already at 1pm by boot to Puerto Jimenez. We saw Boas, crocodiles, sloths, river otters, Tapirs, Tucans, tons of monkeys, an owl, Motmots but no ant eater 😂 If you go to Costa Rica and want to see many animals, it is enough to go to Corcovado. We went to all the other ones. It was hard for spot animals. Not in Corcovado. Save the money and rather spend one night here!

OK. Overpriced for what it is, really. Food not so great. The surrounding flora and fauna however, is astounding

When visiting the park, it's highly recommended to stay overnight at the Sirens Ranger Station. The incredible activity of birds and monkeys at sunset and sunrise is truly remarkable. Our guide, George, provided fantastic education about the national park system, animals, and trees. The food, including generous portions and vegetarian options, was delicious. Although the sleeping arrangements are dorm-style, they were sufficient for one night. I highly recommend this experience.

Nice accommodation in the middle of nowhere. Simple but everything you need in the heart of a jungle. Amazing wildlife sound in the night. Only reachable with an official tour guide. Get your tour tickets soon in advance.

Fantastic couple of hours spent talking to Patrick about his life and his love for everything nature. Held a couple of really cool parrots and spent time in his own mini museum. It's the most remote place I have ever driven but it was well worth it and thoroughly recommend it.

This place is a must visit for people interested in birds/animal conservation, restorative breeding practices, local history and stories from a retired zoologist. Patrick is a knowledgeable and gracious host. Wish we had organized to stay longer and explore his property more with him. His slice of paradise butts up to Corcovado park, he offers a guest house for people looking to stay overnight. 4x4 a must. Go anytime he’s always there. Don’t go if river running high as you need to cross twice.

A magical place with soul “Ave Azul de la Osa” is a truly magical place, deeply connected with nature in every sense. Patrick, the owner, is an incredibly interesting person, full of stories and passion for what he does. It’s rare to meet someone who has dedicated his entire life to his calling — not for money, but out of genuine love and purpose. People like Patrick are pure gold in this world. I recommend everyone who visits the Osa Peninsula to come and experience this one-of-a-kind sanctuary. — Santiago! (Uruguay) 🌿🦚

I can’t recommend this place enough. Patrick has a wealth of experience and stories when it comes to nature, and has a very charming personality. We only had a couple of hours, but could have stayed all afternoon. (Also it’s only $20, not much compared to some $100+ tours) For when we come again / wish we would have realised… - There is abundance of hiking trails, so we would have hiked while there - Patrick also has accommodation, again really reasonable, and I have no doubt, a great host and an abundance of wildlife on offer

About a mile in on an unmaintained narrow and low road is a small wildlife oasis called Ave Azul de la Osa. Patrick runs the place by himself and takes care of his many exotic birds and a few other animals as well. It is in the middle of jungle, so in addition to his collection, wild animals come by all the time. His encyclopedic knowledge of birds is impressive. You can visit for the day or arrange camping. If it is not raining, he will lead night walks. Bring boots. There is room for smaller vehicles but only room for one large camper, so text him on WhatsApp before you arrive. There are large tree buttresses along the road and our 16’ wheel base was about the largest that you could turn around these obstacles. There were lots of low overhanging branches and vines and a couple of streams to ford. There were a number of places you could get stuck if you did not have four-wheel-drive. We enjoyed seeing the caimans in the creek and Patrick’s Hyacinth Macaw and Kookaburra. Patrick has many amazing stories and adventures to share. We learned so much and wish we could have stayed longer. Highly recommend to animal lovers!

We visited Patrick yesterday and it was an absolute highlight. What an experience!!! We have never met anyone like him!! He showed us some of his very special birds and we also saw a few snakes. His place is not very far from the main road and so worth the trip!! His stories are fascinating and his passion for birds, snakes, insects, butterflies, the jungle and everything in between is incredible. We ended up camping in his yard!!! If you are in the area: don't miss your chance to meet this gem of a person!! Pura Vida!!!😊

Very off the beaten path location. Patrick was very accommodating and let us interact with his parrots that were not nesting. He has a really amazing museum full of butterflies, insects, artifacts and bones. He even let us feed the local crocodile and her babies that live near his property. I would love to come back when it's not nesting season to meet the rest of his beautiful animals