Dillon State Park was a perfect weekend spot outside of Cincinnati (2.5 hours). Campground was immaculate. Despite being a very hilly area, all the sites are level. The bathrooms we had access to were heated and perfectly clean (although the bathrooms closest to our site were locked). The park is gigantic. Despite that we had the entire campground to ourselves over New Years Eve weekend. Because the campground is so large(>150 sites), I'd image it feels a bit cramped during busy season. However, there's a decent amount of trees and the sites along tree lines wouldn't be bad in peak season. It was re-assuring to see the ODNR officers drive through multiple times over the weekend even though it was empty. There is plenty to explore and see and it's easy to run into downtown Zanesville if you need something but you still feel pretty isolated at the campground. The beach was fantastic and we also walked the storybook trail. We didn't attempt any other trails because of the mud but the park had plenty to offer. Last note, if rain is predicted, the place turns into a complete mudpit (see pictures of standing water), plan accordingly. We will be back (with our bikes and kayaks next time when it doesn't rain).