The definition of three stars.
Fine, ok, decent diner food. Maybe an extra star for being open 24 hours. Kinda slow but not excessively. Generally nice staff. Definitely a nostalgia/convenience kind of place. If you're up late and hungry or don't want to wait in line at Pancake House/Le Peep, you can come here and be somewhat satisfied.
Egg dishes, burgers, grilled cheese, diner stuff. If you live in the Midwest, you've been somewhere similar, I'm sure.