Love this place. Shady sites (lots of trees), fire pits, hot showers, pool, water play area, mini golf, horse shoes, camp-planned activities for the kids, close to gold country, RV sites are big enough for a tent.
The bad: Not much... it's on a hill, so the walk to and from the pool might be a bit much for some (wheelchairs, walkers)
Check out tours at Black Chasm Caverns and Sutter Mine, both within 15 min's driving. For something lower cost, take a walk through the Indian Grinding Rock visitor center and grounds.