Nightjar: One of the best bars for ambiance I've ever come across. Dress, decor, music -- it all feels like you're in an old speakeasy. Cocktails run a little sweet to me, but the bartenders have some methodical, trancing moves that make it well worth it to sit up at the bar and enjoy. Open late, and almost always a queue (but that's because they won't let you in unless you have an actual seat -- so, plus!).