I chose site#10 and it was perfect.  Was able to hide my tent in a cubby of sorts with the site backing up to a giant boulder.  Had a clear view of the sunset off to the west.

Each site had a fire ring and a picnic table.

Some sites are pretty close together but drive around and you can find one that has plenty of room between you and the next camper(s)

Pit toilets and as many others have said, NO WATER on site.  So be sure to carry along what you need and some extra.

I visited in Mid Sept and it was perfect weather.  Warmer during the day and nice and cool at night.  Just a handful of campers during this time as well.

Just a heads up, LEAVE YOUR HAMMOCK  at home unless you have a stand or plan on tying off to a vehicle or the boulders.  Reading a review below it shows someone using their hammock set up on a Joshua Tree.  Sure it made for a really cool photo but just fyi, yes it is in fact illegal.  Not only that but your damaging the exact thing that you are headed to the national part to enjoy....the Joshua Trees!