Handy to know about if you've missed your last train (or you just want another drink before heading home), Rokugo is open until 7am every night but Sunday. They stock 200 kinds of bottled beer, 100 wines by the bottle and 20 kinds of cheese, so you'll probably find something you like if you can make it through the menu. It's generally easier to just check the beer fridge to see if something grabs your eye.
There are usually around fourteen wines by the glass, and open-bar party plans are available. Prices are comparable with Belgian beer bars around town.