You hit some good spots. The Worthington Farmer’s market is my favorite one. I’ve never been to the Worthigton Inn but I hear it is really good. And the Blue Dube is a classic and one of the few campus area landmarks that they have not torn down.
I went to the Elevator Brewery once and had a similar experience. Food wasn’t bad but the service was. There are better places in the area but I understand not feeling like exploring after braving the Arts festival. I now avoid most of the downtown festivals as the crowds keep you from really enjoying anything.