We've camped at Hungry Mother on several occasions. Great level sites and quiet even though it is on a fairly busy road. Wonderful trails to hike and plenty for kids/families to enjoy. Stayed 8 nights.
We have camped at many different KOA campgrounds in many different states. Usually seeing KOA means you will have a decent experience however; this campground had dirt roads and dirt sites that were not level. Junk was laying all around the campground and individual sites. Numerous "permanent" campers that were filthy and/or moldy. I actually felt sorry for the animals in the "petting zoo". The only redeeming thing about the stay was that it was only one night and it was easy on/off the interstate. I would drive a long way not to ever have to spend a night here again.