Great place all-around. Excellent mountain bike trails, truly great. Clean, well-kept campsites (standard and remote). Clean bathrooms. Highly recommended the History Hike. Ample reservoir access from multiple points.
I once had a reservation at a remote site, I sailed my small boat there only to find someone else set up camp but wasn't around. Park staff noticed me on the beach and came to chat via boat. I told them about my reservation and that someone else had taken my spot. They went and investigated but couldn't find anyone to actually talk with. I was bummed about the site, but the staff immediately found me another remote site nearby, being considerate of the sailboats' limited anchoring abilities. Problems resolved, and all was well, I liked the site I was changed to better in the end.
Overall, it is one of the best state parks you can camp at.