I've been here a number of times for both brunch and lunch, but I've yet to make it for dinner.
I feel like The Commoner is a hip, trendy place as designed by a committee. I strongly reflects Pittsburgh in the decor with plenty of maps all over the walls. The menu has stylish food with a twist (sometimes).
Unfortunately I feel like its size and partnership with the hotel works against it. I'm not sure if everything is just not quite good enough to justify its cost, or if the price is just a bit high for what you're getting on each item, or really if there's a difference at all. I'm sure to cover such a large venue the prices need to be higher. And normally I wouldn't bat an eye at an expensive lunch, but it needs to have a bit of a wow factor for it.
The ambiance gets a 4, the food a 3, and the pricing a 2.