WE spent 4 nights here backed up to the river.  Not many people yet (late May).  the facilities were clean.  Restrooms and showers are perfect.  Many trees taht were just getting their leaves.  Would definately stay here again!

 We drove to Teton National Park, which is about an hour away and Yellowstone is about 1 1/2 hours away.  If you really want to spend time at Yellowstone, you need to camp in the park.  The driving distance is too far.