If you're going to go to Smokie Mountain National Park, the is the side to stay on. Gatlinburg is absolutely nuts while Townsend is about 1000% calmer. The KOA is exactly what you'd expect. Knowledgeable staff and clean facilities. 

Pros: 

-Fantastic bathrooms and showers. Laundry was on point as well.

-The river is beautiful 

-Immediate access to the national park

Cons:

-Like most KOAs, it's packed.

-Children run the night like Westside Story.

-The playground was the center hub of a swarm of bees. 

Long story short, stay here. It's great.