Dan B.
Yelp
I've been a loyal fan and customer of Quatro's since I first stepped on campus at SIU as a freshman - many years ago. Although the campus and town has changed somewhat dramatically over the years, Quatro's is still serving great pizza, by great employees, at a very reasonable price, and in the very same location as its beginning.
I always order their "Challenge" deep pan pizza. It consists of sausage, pepperoni, mushrooms, onions, green peppers, tomato sauce, and all covered with extra cheese. It's excellent! A small (9 inch) is $16.00, a medium (12 inch) is $21.00, and a large (14 inch) is $24.25. These pies are piled high, and unless you're with a large party, you can usually always count on taking leftovers home with you.
I've always been greeted by pleasant, happy, and hardworking employees. I've never had to go looking for someone to refill my drink or bring me my bill even though at times it can be pretty hectic with college students, faculty, and locals filling the place to capacity.
It's a comfortable setting with mostly booths, and a few tables. It has two eating rooms - an upper area and a lower area (watch that step), and they have just recently opened a new third, even lower level, (watch that step), where one can purchase Quatro's merchandise - t-shirts, etc..,
If you're ever in Carbondale and are looking for great deep pan pizza, you definitely need to check this place out.