Decent.
Several in our group ordered the Mac and Chicken, and all of us agreed with was more a casserole than a mac n' cheese dish. As for the burgers and sandwiches, they were solid. Beers were pretty generic but again, nothing to complain about. Service was great and prices reasonable.
Rock Bottom exists in Seattle and it's seen as pretty lame, since you can get better food and a wider selection of beers at several other places. Here, It's probably does a bit better.