Camped here right before hiking up to Big Huckleberry Mountain!
We camped here for one night and it was delightful. Bathrooms are vault toilets and were kept clean enough. The drive to this specific location showed us a ton of other dispersed sites along the side of the road; we saw plenty of other cars that pulled into one of them before we got to the main campground at the trailhead. This place is a popular spot for PCT hikers, on the day we arrived we ran into a group that had organized a camping meetup.
We camped here in early June which meant mosquitos; I was definitely under-prepared, so I'd advise anyone coming here to bring lots and lots of bug spray. Not the organic stuff that fades after 2 hours, but actual Deet. Our Thermacell and citronella candles did nothing in preventing mosquitos.
If you're into it, there are popular dirt biking trails around. We saw many people hauling their bikes up to the campgrounds.
Some sites have picnic tables, others do not. We built a small fire pit out of rocks and were able to find some dried wood that had fallen around us to burn. There were also plenty of pinecones to use as fire starter.