We stayed at Beaver Dam Site River CG last spring. I will say that US 62 on either side of Eureka Springs (and through the town) is really quite curvy. Not unusual for those of us from Colorado, but something to avoid if they make you nervous. So approach the CG on US 62 from the west.
Pea Ridge NP along that route is worth a few hours if Civil War battlefields hold any interest to you. If you get a rain day, you can always head back to Bentonville and visit the FREE Crystal Bridges art museum. I'm not one to go to art museums, but this one is tops! Also, plan on some time in Eureka Springs. The Local Flavor Café will often have a waiting line, but worth the wait.