I frequent this Great Dane location often because it's closest to my house.
The things I like:
1) Outdoor seating when it's warm
2) Everything I've had on their menu is decent. I like their burgers, the chicken pot pie, and the soup/sandwich combo is awesome. It's good old fashioned Midwest comfort food.
3) Awesome beer - scotch ale is my favorite.
Environment: Casual, usually relatively crowded, but it's a big space so you don't feel cramped.
Service: It's never bad, but I'm never walk away with an amazing experience either.