I stayed here a few years ago for an overnight (without my trailer, I slept in the truck cab), and the owners were very friendly despite that fact that I arrived after dark and really early in the season.  The bathrooms are very nice, and the river views are very nice, too.  All sites are full hook-up, I think, and pet friendly.  Not a big park, but I'll happily stay again when in the Smoky Mountains.