The new Line hotel has cemented itself as party central in the partiest of D. C. neighborhoods, Adams Morgan. And the heart of that scene is Brothers and Sisters, the sprawling bar/restaurant that fills the lobby of a former church with the right mix of travelers and locals. The drinks come from veteran barman Todd Thrasher (of Alexandria’s PX), so the high-wire-act drinks like the It’s Not Just for Osaka Anymore, which has vitamin-C powder, and the Ivy Started It (vodka, yuzu, lemongrass, white pepper) have a complexity that is dialed in to perfection.