What more can be said about Melt that hasn't already been said. If you are visiting Cleveland, I would consider this place a must stop for good food before you leave. Gourmet grilled cheese at an affordable price.
I have had numerous sandwiches and many of the delicious monthly specialty sandwiches they have. The best, hands down, is the mighty macaroni melt. So, so good and cheesy. Usually available in December and one weekend in July (Christmas in July).
Expect an hour-two wait if you come on a weekend or during typical dining hours. To avoid a wait, come in right when it opens to be seated immediately. If you must wait, the bar is not overpriced and there are many coffee shops near by.