I stayed here for two weeks, and i have never been this happy with a hostel, the staff was wonderful, the hostel was cleaned every day and the air-condition worked well (Tamarindo has frequent blackouts and the water turns off sometimes, but that is not the hostels fault of course, you just have to deal with it, it does not go on for very long). The staff helped me by booking shuttle and surf lessons, they have towels and padlocks that you can borrow for a deposit and the beds are comfortable!
I would recommend this place for anyone that likes to meet new people, wants to live in central Tamarindo for a reasonable price and wants to learn the meaning of "Pura Vida"!