With its concrete floors, bottles of beer on ice, and people standing shoulder-to-shoulder trying to place their order, Nick's is not the place to go to for the atmosphere. There are plenty of fancy bars and restaurants in Federal Hill for that. You go to Nick's for the seafood and the raw bar. If the idea of slurping down a raw oyster creeps you out, there's steamed shrimp, crabs and mussels and even sushi. During the week, the atmosphere at Nick's is pretty laid back, but on weekends, the place can get packed.