It is just a parking lot, but there are a couple of spots (on the end of the rows) with trees. If you call in your reservation you can request a specific spot number and there is a map of the camp ground on the website.
There are 3 bathroom/shower buildings on the property. They are clean regularly, but while we were there they had a plumbing issue in one of the bathrooms and one of the showers. They are not fancy but they are functional.
There are full hook ups, a dog area, and a playground. There is very easy access to the Circus Circus casino, adventuredome, and the Duece (bus service on the strip).
This is a very affordable way to experience Vegas while having your own home away from home.