Prince of Petworth and DCist reminded me -- the Red Derby is planning a roof deck! When I was there this weekend, there was a big hole in the ceiling where they planned to have the opening, which was near the movie screen in the main room. One of the staff said the staircase will start near the bar and head up from there. PoP says it will open in August and there will be a bar up there too.
Always nice to have another place to relax outside.