I really enjoyed my meal at Red Room. Very unassuming from the outside, which seems to be the way of things in Pittsburgh.
I started with a salad... can't quite remember which one it was, except that it was good. I also had the strip steak, which was excellent. I didn't particularly care for the pickled veggies on the side, but if I stayed away from that, then it was fine. We had the bread pudding for dessert, which was divine. I'd come back just for that.
Atmosphere is dark and cozy, but the tables are far enough apart that you don't have to worry about being too romantic with the people at the table over. Service is good.