We camped at site 13 between 2/12 and 2/14. There were restrooms and a large sink that is useful to dump bear attracting water located pretty close.
The campsite itself is fairly large. I would say it lends itself more to tent camping than car or RTT camping. The site is located on a significant slope, this includes the paved parking area and the grass. There are a fire pit, bear box and picnic table located at the site. Be wary, when we went there were numerous large holes that were definitely a trip hazard.
While there were rangers and employees of the park driving around, there were no actual rangers at the kiosk. Additionally, there wasn't a reservation list posted.
As a first time camper, this site was very comfortable. A little more sequestered than other spaces. There's a decent rock that offers some relief from the sun, and it's a parallel park spot! Perfect for those with a rooftop tent.
The campground itself is decent. A dirt road leads you through the loop, and there's a trail leading to Ryan Ranch. Central location made it easy to get to all the trails and spots, Cholla is around a 30 minute drive from there.