Kaya is one of the best rest. in Pittsburgh. The food is consistently good, and the carrib. theme is not common for a city that consists mostly of fried food. Great conch (and sometimes shrimp) chowder and its safe to say the place has the best Cuban sandwich in town.
The lunch special ($12) is very reasonable and would highly recommend it.
If you are from out of town, this is one of the places to go.