We stayed at Doane Valley Campground, campsite #7.  The campground has lots of trees so there is shade. Camping and picnic areas are clean and well kept.  The bathrooms are well kept and include flush toilets and showers, but make sure to bring quarters for the showers. There are several trails nearby with a great mix of easy and moderate hikes that are easily accessible and clearly marked. Palomar Observatory is only 5 miles up the road.  Do not expect cell service of any kind, for us that was a wonderful escape.