I have no first hand information to share, but I looked in my “Frommer’s Best RV and Tent Campgrounds in USA”. They recommend both the Cherokee KOA
www.cherokeekoa.com and Smokemont Campground, also in Cherokee, NC. The later is a federal campground in Smokey Mountains National Park. It is rated one star (out of 5) better than the KOA in each of the following categories: beauty, spaciousness, insect control, quiet, and cleanliness. The KOA is rated two stars higher in security. However, there are no hookups, only a dumping station, at Smokemont. Both campgrounds have no less than 3 out of 5 stars in all categories this guide rates.
There is more information from the book that I could share if you have any questions.
Jim