I would eat their food every day.
The restaurant was recommended by a local tour guide when we visited the Poas volcano. The restaurant is clean, cozy, and the owners are always there. You can see the kitchen and how they are preparing the food and drinks. The staff is friendly and you do not feel you are in a restaurant built just for tourists. We all tried the casados, a local dish of Costa Rica, and I swear I could eat it every day if I had to. For dessert, try the arroz con leche and the home made apple pie. You won't be dissaponted!