I have ordered from Nonni's for a party we got 4 or 5 pizzas with bread sticks. They're pizza is very fresh very clean, we got 2 veggie pizzas and the ingredients were really good quality
not like other pizza places where the veggies are like rotten.
I ordered a single pizza for me and my siblings on a sports night and in Pittsburgh; all the pizza/food places get busy then but their delivery was very fast and again good quality.
As far as the customer services goes they're very polite and do what you ask for the pizza party we had they even gave us a discount which was nice of them. They're prices are a little lower than other places anyway.
I'm not saying they're the best pizza or pizza place but as far as how I was treated as a customer and the food I got for the price I paid for, I give them a five star.