I recently led a Yoga Retreat at OMV Volunteer Center, a Permaculture Eco Village in Costa Rica, by the Osa peninsula, Pacific Coast. I highly recommend this place to anyone who is interested in learning about permaculture, sustainable living, and in an immersion in the Jungle life.
Accomodation was incredibly comfortable, with large tents - bigger than my bedroom in NY!- sealed and clean so no bugs inside, comfy real beds, hot water, and a friendly familiar atmosphere!
Stay tuned: I have the feeling I will lead more yoga retreats there! ;)