Club Seaborne has a friendly atmosphere and a spectacular outdoor bar. The food is quite good, but not on the level they pretend it to be. The problem with Culebra is that it's remote and it's hot, so nearly everything has to be frozen, including the seafood. Don't come to Culebra for the food, but if you do need a nice meal at a resonable price, Seabourne is the call.
The lobster monfongitos were quite nice--tiny cups of refried plantains and pork skins, stuffed with a lobster mixture. The churasco, a flattened flank steak, was well done with a nice mojo-type, creole-inspired flavor to it.
Carlos, the guy with dreads and nice clothes, is a grumpy, grumpy waiter.