We stayed here one night while visiting Black Canyon of the Gunnison National Park. Campground is clean, very big rig friendly. Easy to maneuver. The pool and playground were clean.

Great campground!  One interesting thing, the entire campground is gravel.  The road, the sites, everything, there is no grass which was a little weird at first.  However, this campground is really well maintained and a great place to stop if visiting Mesa Verde National Park.  The KOA has a short trail that connects to the county dog park which was a HUGE bonus for us as we were traveling with an energetic puppy.  The KOA overlooks mountains on all sides and the sunrises and sunsets were gorgeous.  I was TERRIFIED of seeing snakes while there, and happy to report we saw none.

This campground is literally on the side of a mountain.  Rent a golf cart if you're not prepared to walk a LOT of hills.  We really enjoyed staying here.  The sites are nice, pretty well spread out, trees, and fun amenities for the kids.  One downside, the WiFi is non-existent, and there was no cell reception.  If you need any kind of connectivity the only place you can get WiFi is down by the ranger station.

The Asheville East KOA is well maintained and a nice place to stop if you're exploring Asheville.  It's about 10 minutes east of downtown Asheville.  The spots are really tight. They have been updating over the years, but could use a little more work.

Mama Gertie's is the most well kept campground I've ever been in.  The bathhouses look like something inside of an upscale hotel room.  There are mountaintop sides with big patios that hang over the mountain top and have incredible views.  It is one of our favorite places in the country.

Downside, amenities are limited.  No pool, no playground, etc.

This is the kind of campground you can take your kids, never leave the campground, and have fun for days.  We went over a long weekend in October, with the point of the trip being to visit Mammoth Cave National Park.  The campground had activities for the kids all day Friday and Sunday.  We did arts and crafts, bingo, trick or treating, watched the golf cart parade, played on several of the different playgrounds, and putt putt golf.  

The bathhouses were very clean, campstore is well stocked.  This is a LARGE campground so renting a golf cart or bringing your bikes is recommended.  

The only downside - it is expensive. We paid almost $100/night.