Enjoy an informal but tasty meal at Mojito's. The food and drinks are inexpensive and good quality and the service isn't bad either. Chicken, fish, seafood and steak are all presented nicely seasoned in generous proportions.
Air-conditioning is on very high though, so you may want to bring a jacket.
Specific recommendations are Conch salad with lime for seafood lovers, skirt steak with black beans and rice for carnivores and mofongo all around, although I personally prefer tostones.
The mojitos aren't bad, but my gin tonic was flat.