Koomer Ridge is really an excellent campground!  As of April 2023 all sites were first-come, first-serve (no prior reservations permitted).  We camped one night and thoroughly enjoyed it!  No hook-ups but the site was level for a 21" campervan and had a HUGE tent pad, 2 lantern posts, fire ring and picnic table in a spacious site.  Plenty of trees for hammocks, too!  Sites were more than adequately spaced out around the campground and some were quite private.  Multiple trails leave straight out of the campground and head into the Red River Gorge, a nice feature.  Campground is heavily wooded, too, so plenty of shade should be available during the summer months.

The shower house is next to Site 14 and was clean though chilly but had hot & cold running water and was modern/updated.  Only ding here was that a couple of the toilets were out of service during our stay - no big deal as the campground was fairly empty and I hope they'll be addressed before summer crowds arrive.

The campground is on a ridge - so apart from the sites themselves, there is very little flat ground to be had.  Not a drawback, just an observation.  But the hills make for a lovely setting and beautiful sunsets/sunrises filtering through the trees.  Only criticism is the proximity to the Mountain Parkway nearby; had we been tent camping, the traffic noise would have been a nuisance all night.  But in the campervan it wasn't noticeable, fortunately!  Not enough to cost a star, but worth noting if you're using a tent or soft-sided camper.

Red River Gorge is an extraordinary and beautiful place to explore, and Koomer Ridge is an excellent basecamp from which to do so!