We only visited briefly as we had some miles to cover that day, but we sampled stuff at three eateries, all of which were great or excellent. The place has a ton of history, is aesthetically beautiful and if in Cleveland for any length of time I would probably recommend as much as the Rock and Roll Hall of Fame.
Ask locals which places to check out if you can. We like the place with Pastee's, The stall selling Pizza Bagels (not the store bought kind) and the Falafel Place in the back left corner through the doors (next to the Live Fish).
Only wish I had more time!!!