Several years back, when I worked in Center City Philadelphia, Monk's was one of my regular lunch places. In the city to meet friends recently, I steered them to Monk's for a Memory Lane experience. The place was not as great as I remembered.
My first clue was that Monk's was surprisingly uncrowded at the height of the lunch hour. When I used to go there, I had to arrive before noon to get a seat. On this recent visit, my friends and I were alone in the front (bar) eating area, and the back dining room was little more than half-filled.
The attraction here is the enormous beer menu, draft and bottle. I had a tasty Belgian ale, but at $8 for a small glass, I didn't come back for seconds. Our food was about average -- we just had burgers and sandwiches. My chicken sausage sandwich was good but, like the beer, small for the price. The house fries are still really good.
The place is cozy and welcoming. Service is efficient. The after-lunch coffee was very good indeed.
Overall, a so-so experience. Nothing memorable, but nothing to complain about, either. If you're a beer guru (preferably with a full wallet), this place will make you very happy. But the food is nothing to rave about.