Maybe it’s the cozy bistro seating. Or the impeccably dressed staff. But more than three years after opening, Marvin remains the undisputed cool kid of the U Street bar scene. An homage to Marvin Gaye’s self-imposed exile in Europe, the bar offers a lengthy list of Belgian beers and serves up crowd-pleasing dishes such as chicken and waffles. The spacious outside deck, which gets jammed in spring and summer, is the closest you’ll come to experiencing a Brooklyn rooftop party in DC.