Been there twice in the last year. The service was mediocre once, and embarrassingly bad the second time. The food is good; it's Meatloaf-Centric American. It's a place you'd take your conservative parents.
That said, the first time I was in, some of the regular customers were being ridiculously outgoing about politics, and decided to group-hate some things I find pretty reasonable. Didn't seem reasonable to argue with a large group of folks in their regular spot, so, ah, that's that.
If you can't find plain-to-upscale American food in Pittsburgh, you're really not looking very hard. Reading another review, I'd be baffled trying to figure out why anyone would take the bus here.