We have visited this campground twice over the years, the most recent as part of roadtrip back from Yosemite.  The quality of the experience really has to do with what loop you camp in.  If you look at the website for the park there is a notice that they are getting ready to do construction and it appears many of the issues will be fixed.

Right now, I'd strongly recommend camping in the upper part of the "A", "B" or "C" loops.  The lower parts of "A" and "B" are pretty exposed with just dune grass/bushes for protection.  The bathrooms in those loops are also in the best shape.  The "D" loop needs a lot of work.  The bathroom is very mildewed and just bearable.