I and three friends had lunch here and it was just great. There is a variety of pierogis and they are quite creative - we had the reuben and it was amazing. I wish I had been hungrier. The portions are large and one order of six fills you up. In fact, I shared it with someone and it was plenty.
There is a full bar and it's nice to enjoy pierogis with a glass of wine, which is not possible in many pierogi places.
The location is in the middle of downtown Pittsburgh, so you have to be down there already or it's kind of a pain because you have to drive and find parking (in a big garage, in our case). Probably the people who go here work in the area or are going to the theater. It's in the theater district.
I would go back because I thought the food was really good.