We stayed in Chachagua Rainforest for 4 nights in a bungalow. Very quiet and calm. Staff there are really helpful and welcoming. Nice place to see birds, tucan... Food is really good.
The area of the hotel is also great to do a tour in the forest, explore the costa rican farm or just enjoy the nature around your bungalow. You can arrange tours for many things also, but bewae he hotel is not so close from la fortuna so you need a car or foresee to take taxi into town.