Though it's a tourist spot, I still highly recommend the cheesesteaks here. It's directly next to Pat's, which is the original cheesesteak in Philly.
Very good cheesesteaks and cheese fries. The counter staff is not terribly patient, but they're not too bad.
As a tip, to order a cheesesteak with cheez whiz (the preferred way) and with onions, you'd say "one whiz wit". Yes, you don't use the "h" in "with". If you don't want onions, it's "one whiz witout".