Went on a Friday night at 1AM, with a last call of 2AM with a large group of 15+.
WAbar is small, but has a fun atmosphere. It has a jitz table and a beer pong table, with booth seating towards the front of the bar. There was a DJ at the time playing EDMish music too. Bartender was also super chill, and I had a pretty nice end to my night!
If you check into Yelp and rate you get a free shot off their bar rail with the purchase of a drink :)