We just came back from PF 2 weeks ago, and stayed at Up The Creek RV Park.
They have a page online...and yes, it *is* this nice;
Pigeon Forge RV- Up the Creek RV Camp, Pigeon Forge, Gatlinburg, Smoky Mountains
Low 30's ($) per night. We stayed there nine nights.
Awesome quiet place, small, 35 spaces, with a mountain creek coming down both sides of it. Some spaces have outdoor kitchens.
FULL hook ups but no public restrooms, showers, playgrounds etc. Kids played in the creeks, and had a great time. (other kids, not ours, they've all got kids of their own now)
It's about 5 miles off the main drag, out Wears Valley Road, turn right on Walden's Creek, left on Little Valley Rd. cross the bridge and you're there.
Quiet setting, no city lights or noise, lots of stars, tree frogs and crickets.
We'll be back there next year, for sure.
VERY dog friendly.