The Atlas Room (1015 H St) will open for Valentine's Day, will have some special thematic cocktails, and is taking reservations at (202) 388-4020.
Liberty Tree (1016 H St) is whipping up a special Valentine's Day menu and taking reservations for Valentine's Day only (202) 396-TREE (8733).
Smith Commons (1245 H St) has a special menu available all Valentine's weekend. Call for dining room reservations (202) 396-0038 or enjoy a cocktail (but still no bar menu) upstairs.
and Ethiopic (401 H St) is offering a $30 prix fixe deal as well (via Frozen Tropics).
Other ideas: go neighborhood low key, casual with your friends and neighbors at the Argonaut where Monday is half-priced wine night, go for a night of fun and games at H Street Country Club, grab a drink and relax at SOVA or Church & State.