Thank goodness we found Bar Symon after basically being ignored at The Burgh just down the hall at Pittsburgh's airport. We were seated immediately by a friendly hostess. Our server came right over and introduced herself. She was great, way above average. She was young, enthusiastic without seeming fake, efficient and funny. What a pleasure.
The food was very good, a step above what you ordinarily expect at the airport. I got a basic grilled cheese sandwich. The bf got an excellent pastrami sandwich. We shared a huge side of Parmesan rosemary fries. They have a nice selection of beers, and service was fast enough you didn't have to get anxious about missing a flight.
Oh--there were also electrical plugs EVERYWHERE, under each bench along the wall, and at all of the hightops facing the terminal. Good thinking, and we were able to recharge while we ate. I don't know what more you need in an airport restaurant.