It's in a perfect location and has great decor.  I love that you can go on the roof.  That will be awesome in the spring and summer.  It's kind of a hassle getting in there especially if you're a guy, and the bouncers have a tendency to be rude.  The drinks are a little too expensive for me ($8 for a beer ...) so I usually get my drinks somewhere else then stop by Commonwealth for the cool vibe.