We've stayed at Chapparal Campground in Wonewoc WI. It's pretty nice BUT it's not that close to Wisconsin Rapids, sorry :(. We like it because it's a nice and quiet and away from the hustle and bustle of the Dells.
There's a nice restaurant right out on the highway that's good to eat at if you're not in the mood to cook. Check
them out. PM me if you want particulars and or my own pictures.
We've been going to it for 3 or 4 years now, always in the fall though. We use Chapparal as a home base for our daily bike trips to view the colors in late September early October.
Dan