Next time I'm in Zion I'll be staying here if I can't get a reservation in the park, and you should too. We woke up with cows meandering through the site, and it was very pretty next to the creek.

There was a short steep hill to get down if I remember correctly, and there were a couple other cars camping there too, so we weren't alone... but there's also another BLM alternative a few minutes up the road if this doesn't work out for you. For being free I see no reason it shouldn't be 5 stars