Really pretty geology and views! Some hiking right on site, bring a kayak. My neighbors all had golf gear, not sure where the course is. Lots of mountain bikes on the trails too (hike in the opposite direction!). Sites are not private but it’s still lovely. Basic State Park accommodations, clean, well-cared for, actual hot showers. We didn’t get reservations (it was winter), but you might want to since it’s a small and beautiful site.
We stayed here twice this summer and really liked it both times. All the tenting campsites are on the Millsite Reservoir but if you go higher than site number 17 you are a bit further from the water. The campground is open, so not totally private, but it was so quiet it didn't really matter. We went for a couple of hikes in the Ferron Canyon which you can walk to, and they have paddle boarding on the reservoir which we didn't have time to do. They don't have typical fire rings on the ground - they are up off the ground. See photo.