The nearby location of the campground close to Yosemite is definitely an argument to stay on this campground, especially when all the other campgrounds in the Park are crowded. However, according to our experience there (we stayed there for 2 nights), we won't come back but would stay on one of the less developed campgrounds in the area. For a privately run campground, the facilities were quite dirty. There was trash in the showers which was not removed during the time we've been there. The sinks in the bathrooms were smeared with some kind of sauce other campers had left there, and nobody of the staff felt responsible for cleaning it within the 2 days we had stayed there. Same with the restrooms.
The sites are ok and provide enough room. However, at least our site was also messed up caps and small pieces of trash from previous campers, where I would expect that the staff removes them at least occasionally.