I stayed in the group camp part of this campground, which was right by a clean pit toilet and a short, slightly uphill walk to the bathrooms that had running water.  This is on the outer part of Yosemite National Park, so it's not as crowded as Yosemite Valley.  There are hiking trails around.  When I was there, there were warnings about a mountain lion being spotted in the campground, so just be aware.