Yes, definitely a great pizza place. Forget that the pizza is only 8 cuts and that the price is up there. about $16 to $24 a pie. to me it's well worth it to spend money on a decent pizza as opposed to commercial places with their never ending deals. Me and my fiance love there kalamata olive pizza with pancetta or prosciutto, BOMB!! The pizza crust is labeled as well done meaning the bottom is black but don't be fooled that doesn't mean that it is burnt...It's simply cooked so that it's nice and crispy because they cook it over a coal fired and not a  gas or electric oven.
Plus they have this meatball appetizer that has such tender meatballs and is served with soft and creamy ricotta cheese as well as two pita slices. It's a must have every time we go. The salads are made family style so i suggest bringing 4 people if you plan on eating it all. Try some of their beers too. they have a cooler full of bottles as well as a few drafts but nothing too exquisite.
That's the first place I tried white lighting which is now one of my favorite brews. they have happy hour with discounts on brews so check it out when you get a chance. I haven't been there in months so i think its time for a check-in!!
I was torn between 2 and 3 stars and decided to be as fair as I could and settled on a 3. A 2.5 would probably nail it.
I've now visited Pi 3 times, all using groupons. I've tried both the caprese and della casa salads, as well as the sausage, pepperoni, and margarita pies. One calzone as well, but I can't recall which one since it's been so long.
As others have mentioned, over the course of time the pizzas have gotten smaller and the price either the same or higher. Also, despite the thin crust I prefer, they still somehow manage to come out soggy to the point of dripping all over the place when you attempt to fold a piece to put in your mouth. Again, when they first opened this wasn't my experience. Something has changed over time.
My other large gripe with the pies is the odd way they put on toppings. One, they don't give you all that many, especially so considering the price. A few of the photos right here on Yelp can attest what I'm speaking of here. Two, in all my experiences, they were all concentrated in one area so you only get to taste them on a couple of bites of the entire pizza. Spread them out evenly please. At least try.
On the pro side, both salads were of good size and very well done and tasty, probably the strong point of the place. And while I don't recall which calzone I had, I do recall being more pleased with it than the pizza.
Service has always been friendly and attentive. I like the atmosphere as well, though I have only gone during lunch hours. I probably wouldn't say the same if I went at night, but I avoid the Southside at night in general for this very reason.
Place has potential, and I may give it another try in the future to see if they clean up few things up as I'm not a fan if thick crust pizzas so prevalent here in Pittsburgh. Otherwise I might stop in for a salad or two. But for now, it's a bit underwhelming and overpriced overall.