I've moved to a different office here in the city and a local brought me to
Jeanne's Cheesesteak Shop (the sign says something like that )
It's on the corner of Paige and Gough.
Divine cheesesteak! Very generous -- costs about 7.50$ a sandwich so not rock-bottom cheap. The real deal as far as I can tell (I'm not from Philly so I don't know for sure).
The toasted baguette is fresh and so tasty. A light smear of mayonnaise, lots of shredded lettuce and tomatoes, and then beef chopped with two spatulas with a restrained amount of cheese. A perfect blend of textures. I get it with everything except oil and vinegar, but I bet that's good too. I add a little salt and pepper -- it's not salty, which I think is good. Lets you decide how salty you want it to be.
The place looks dicey but the food is great. The nabe is not the best, but it's not too far from Zuni if you're in that area. I looked in the yellow pages in vain for it's proper name, address, and phone number. This is as exact as I can get. The sign has lots of other words on it, and the window has arabic characters.
I have only gone with a real "regular" -- I haven't attempted a solo flight, so I can't vouch for the service if you're going to try it. You order at the front, explain what you want on it, then select your drink from the cooler, and then sit down and be quiet. They bring you your sandwiches (and fries, though I've never tried them) to your table when they are good and ready. You pay on your way out, telling them what drink you had. It's not a rush spot, so don't go if you're in a hurry.
I haven't been this excited about a sandwich in a long time. The person who brought me eats red meat very rarely, and even she has become addicted. Try it, and let me know what you think!