We wanted to visit Sunset Crater and we found this campground just across the street from the crater.
In addition to being able to see this beautiful sunset cone, there are underground lava flows everywhere in this area. We were able to chat with a ranger and explore one (wear layers, it is COLD in them).
The campsites are large enough for a group of people (8 people) and they have wheelchair accessible camping and picnic tables.
There is water on site and they have flush toilets in clean bathrooms. We didn't spend much time at the campground itself due to all the exploring we wanted to do, but it worked great and was very quiet for our crew.