One day Washington will get its act together and develop the waterfront neighborhood in which you find Zanzibar. In the meantime, this area is pretty deserted at night, except for a handful of restaurants and Arena Stage. It really doesn't matter, though, because inside the nightclub you're looking out at the Potomac. Yes, this is a club with actual windows. In keeping with current trends, Zanzibar has lots of couches and chairs arranged just so. A Caribbean and African menu is available, and you can dine while listening to both live and deejay music. Open Wednesday through Sunday, Zanzibar offers something different each night, from jazz and blues to oldies. Wednesday is salsa night, with free lessons from 7 to 8pm, though a cover still applies: $5 to get in before 10pm and $10 after. An international crowd gathers here to dance or just hang out.