I used to spend a lot of time at this PF Changs when I worked on the floor above it. The food is "eh" and the waitstaff were always nice. The decor is the PF Changs standard - faux chinese. There are large cement horses outside of the doors which lend a little to the decor.
I have never really been impressed by any single dish at PF Changs. The lettuce wraps are the best thing on the menu and they're an appetizer. Everything else is just kind of boring and expensive. If you're at Somerset and looking for good semi-expensive eats, head over to J Alexanders in Somerset North or McCormick & Schmicks (the bar section) outside of the Somerset South.