The first thing you should know about Tapo Canyon Park is that for actual tent camping, you will be in either decomposed granite or concrete. The second thing is that there is no cell service and no phone landlines there. 

The park is very nice, and very well maintained. There is a large grass area with an upgraded playground, ample covered picnic area for large groups, and an archery range (private, but open to the public on Saturdays).

The archery range is one of the best in California. There is a members area and the original range is open to the public on Saturdays from 9-1, with a nominal $5 fee.

The campsites are designed for RVs. I have camped here in a tent and there is no way to drive a stake into the ground. The sites are fairly large and well spread out for an RV lot. 

Each site has a fireplace, picnic table, and full hook ups. There is not much shade. The sites are very well maintained daily by the camp host Terri. 

At night you can hear the coyotes calling as they roam the rugged hills, but don't worry it's a very safe park.

I would give the park 4 stars for camping in an RV, 2 stars for tent camping, the facility as a whole is probably a 4.