Location: far north near the border to Nicaragua. Garmin GPS makes finding the lodge easy. Unpaved road for about 1,5-2 hours. In dry conditions, can be made with a 2WD (4WD more convenient, but only because of ground clearance, may be different in wet conditions). The area has some hurricane damage from a 2007 hurricane, and in result some forest harvesting.
Lodge: nice setting, nice rooms with fan, terrace for every room, very relaxed and laid-back. However, no internet. Loved the hammock outside of the room. No mosquito nets per bed (in January definitely not necessary). Food is nice and plentiful (but you won't go to Central America for a culinary experience anyway). Staff is very very helpful and absolutely great, speaking Spanish/English/German.
Activities and eco-factor: some - partly very nice - small trails and guided walks, canoes, bird watching, all free. Dense jungle atmosphere. Paid activities: half-day boat trip to the border (village of Boca San Carlos) and horse-riding (everything else free). We were a little unlucky with animal sightings though. Poison dart frogs are regularily seen. What I didn't like is the eco-factor: they're feeding birds and kaimans for "scheduled" shows, and keep a captured scared frog for a nightly appearance. Fun and easy for photographers and kids, but not really "eco-tourism". On the other hand, had a very experienced and knowledgeable guide on the nature walk, a US professor of biology staying there as a volunteer for some weeks - impressive. Rio San Carlos surprisingly didn't see a large number of fish or birds, as to some locals the river suffered some severe environmental pollution some time ago.
Overall: recommended for 2-4 nights stay, very good price-performance ratio. Had an absolutely great time, but would set my expectations the next time a little different (more relaxing, less exploring).
