The campground at Morro Beach State Park is wonderful. It is divided into areas of longer pull-throughs with full hook-ups and smaller spaces off with none, yet you all feel you're there together. The shade and ambience provided by the eucalyptus trees is extraordinary.
Each space is provided with a picnic table and fire pit, and some come with stone barbecues. Campground hosts, and there are several, sell fire wood.
A very nice nearby amenity is a cool little destination restaurant right on the nearby marina, a short 5-8 minute walk from the campground. A museum is very close too, just outside the entrance gate.
Another amenity is showers, but our experience was pretty iffy. We were a group of four and had four entirely different showers, though all about the same time--it's a room by room inconsistency, not a time of day problem. Some had enough hot water, others (ME!!!) didn't get any. Even letting the water play out from the first quarters and then restarting it with new didn't get me another drop of warm water. Obviously, the key to a successful warm shower is feed it a quarter--and if you get warm water throughout that minute, feed the machine more quarters and have your shower. If you don't, try a different shower room.