Clarendon in VA. But really, you are going to pay a MAJOR premium to be near metro...consider going to car free. You are young and single, be as unencumbered as possible. I would also suggest you look into Logan Circle, Columbia Heights (might be too "gritty" depending on where you are moving from), Navy YArd (tons of single young folks moving there, great waterfront park etc). HAve fun OP. Damn, I had sooooo many good times that age in the City. Also, if you want to meet a ton of people join a rec sports league. I did soccer, bocce and kick ball. Its a HUGE deal in DC area. Instant fun and social life...And you don't have to drive anywhere drunk if you get close enough to metro