Notd that this campground has changed management and so is now technically the Hell Creek Recreation Area, so if Google maps tells you it's closed don't worry about it! You'll still get to the right place.
Other reviewers were not exaggerating about the road to get there. It was 20 miles of bumpy gravel road, took us 1.5 hours to get over and our motorhome hated every second of it. It was absolutely stunning though, and I have to imagine that if we hadn't been in a motorhome we might have felt very differently.
Only electricity at our site, very limited shared water source, and the showers were coin operated. The staff person there was so nice and welcoming.
So, if you have a vehicle that can handle a difficult road and you're willing to rough it a tiny bit, I would definitely recommend this place. If not, maybe skip it for now.