In my opinion, this campground is a means to an end... It's simply the most convenient place to camp if you want to take advantage of Zion and all the amazing hikes.  We arrived super late because of traffic and the entrance to the park was closed so we couldn't get in to camp - we had to (illegally) sleep in our car until morning.  The campground is right at the entrance and is nicely spaced out.  In all honesty, we didn't spend much time at the site because we were out hiking the Narrows, Angels Landing, and anywhere else we could possibly wander.  There's a great restaurant nearby inside the park, with a big grassy area out front.  Mule deer everywhere!

Do yourself a favor and take the free shuttle to the Narrows, even if you only hike in a quarter mile (which most people do).