Going to Grum's used to be a weekly occurrence at my house, but for some reason a few years passed without visiting even though I live just minutes away.
I have now started going frequently again! Anytime my mom doesn't feel like cooking, I'm chiming in with "I'll go pick up some subs if you want!" (Obviously grabbing Grum's beats cooking dinner every single time).
Pretty much your only option with Grum's is take out because they don't have tables or chairs to eat at. So I always call ahead because then I don't have to sit there and wait. My only complaint is that even though I call ahead and come to pick it up when they tell me to, pretty much every time the order isn't ready. But other than that, they make THE BEST SUBS you can get in Cleveland Heights.
PS. The subs are ENORMOUS I always go with the half size and still have leftovers.