We all know that Eat n' Park is a Pittsburgh institution, but this Murray Avenue location is definitely the best! I attended Chatham University several years ago, where my friends and I would walk up in the middle of the night to get some coffee and cheesy fries while smoking a cig in the smoking section! We would go so often that the 3rd shift staff knew us by name and knew our orders by heart. All in all, the service is friendly, the food is cheap and satisfying (with plenty of healthy options), and you can't beat that it's 24 hours!