My friend and I went together for one night and we loved it! It was her very first time camping and she enjoyed it very much. Here is our review:

-NO T-Mobile: There was no signal at the campground at all. We drove about 7 minutes to the Palomar State Park Parking Area (based off Apple Maps) to find spotty signal. Just good enough to make a phone call if needed. 

 -Privacy: Many of these sites such great privacy, even though we were neighboring #19, there are a quite a bit of trees. Also, you walk down a few stone steps to pitch your tent, so your car parked a level about you on the street provides nice privacy.

-Convenience: The bathrooms were pretty close to us and were kept fairly clean. Also the firepit and grill were a plus.

- CRITTERS: I mean who doesn't know this but the squirrels and crows were greedy! They had no issues flying/ skittering to your food if you were 6 feet away lol. 

-BEAUTIFUL!!!: You can hear the Doane Creek flowing and the stars are just an absolute sight, we took the rain-fly off our tent so we could see the stars

I'd imagine spots 21 and 26 would be great because of the privacy and creek location. 

I'd avoid spots 28-30 just because of the steeper hill to walk UP to your campsite. It's already a pain to lug all your gear.