Isleta El Espino, Nicaragua In the middle of Lago de Nicaragua, a freshwater lake in Central America, lies a pretty hideaway called Isleta El Espino. Nestled among lush mango groves, the sustainably built eco-lodge includes two treehouse suites, a bungalow, a restaurant, a bar, a swimming pool and yoga platform. Whether you are doing yoga by the pool, kayaking or watching the sunset behind the dormant Mombacho volcano, you’ll have birds and monkeys for company. The resort is so off-the-grid that it only uses solar power and water filtered from the lake. From its hand-woven hammocks to meals, everything is sourced locally. Isleta El Espino makes going green look good.