We recently stayed at the KOA Nashville. Have stayed at both campgrounds near Camping World.
There few sites easy in and out or drive through fro big rigs of 45. We had a time getting ours in a pull though site. Tight fit and tight turns, so take your towed off. Good water, nice paved sites and picnic table swing and fire pit not a truck ring on the ground, very nice, well maintained, shallow swimming pool so kids are safer, smallish though.
Not the cheapest, neither is the other campground. Nashville is a destination and even marginal parks aways out charge too much.