I have stayed in hostels all over Latin America and Europe and feel that Casa Tranquilo was by far my favourite so far. I have never encountered such friendly and helpful staff. The bedrooms and bathrooms are very clean and well kept and the guys working there are more than eager to provide all the information you need to have an amazing time in the Monteverde area. I loved that the place was quiet at night but full of life during the day. I will definitely be going back to this hostel to chill the next time I visit Costa Rica.