This place is a lot of fun, as are most piano bars, and I tend to go here with my brother and we usually host meetings here. I would say that the things that I really like about this place are the following:
1. It is located in a really swanky (Encore) hotel, so if you bring people here, they'll be impressed.
2. A bottle of prosecco or pinot gris is surprisingly affordable, despite point 1. If you are in a large group and are not looking to spend tons, I would order a bottle and stay clear of ordering individual drinks -- you'll definitely get more bang for your buck.
3. Patrons are really friendly and open to chatting, and although the wait staff is not as warm as I'd prefer, they are not overly-pretentious.