Here's a tip from me. Want a bone-sticking lunch that won't leave you hungry at 3 o'clock? Go to Grum's.
Here's another one: Want a sandwich that is über tasty in it's simplicity and fresh ingredients? Go to Grum's.
Since I used to live in Cleveland Heights, I realize that it's not only annoying to get over there from downtown, but it's also impossible to find parking. Grum's is one of those sub shops that I'd set aside my impatience and laziness for. Seriously.
Drive over to Coventry. Park your car in the garage. Go get a sub from this Cleveland landmark. You won't regret or forget it...mostly because you'll be full for the next day and a half.
Also, I have to admit that I may have lived off of Grum's for a month or two... only because I was broke and one sub would give me leftovers for days.