Stayed the first week of May.  Sites are road side pull offs, there were some back ins the other loops were closed since it was early in the season but it was a nice place to camp for a few days while we visited the area and Wind Cane NP.  No water camping fee was $4.50 Some great hikes in the area and the cave tour was excellent.  Not the typical wet damp cave tour. Since it was early in the season with not water (water was available from a spigot at the NP Visitor Center.  Close to many attractions if you can handle a 30 to 45 minute drive to Custer Mt Rushmore etc..  If in the area again I would definitely stay there.