Stayed here with some friends.  

This is a gorgeous spot to camp! The river is right next to the campground and you can always hear it.  The sites are close together, just as a lot of KOA's are set up.  The bathrooms are in great shape, nice and updated.   This is an area where you want to make sure your trash and food are kept put away due to the bear population.

The staff is friendly, the grounds are well kept.  There's a little store up on the hill where you can get necessities and ice cream, along with other things! It is a very touristy area, so keep that in mind when booking a site here. 

Camping at this spot gives you plenty of things to do.  Tubing/swimming/hiking/biking.  There are tons of hiking trails.  If you like to ride a bicycle, there's a trail that goes along the main road by the campground.   It's not complicated, but lots of hills.  The welcome center is a neat place to go take a look around.  They also have bluegrass festivals here throughout the year.  Easy access to Cade's Cove Loop and the state park.  

Townsend is a very pretty and nice area with lots to offer!