We have been to this KOA before, but it is especially expensive during the winter months (snowbird season).

Pros:

Spaces are not cramped. There are plenty of ways to stay (cabins, RVs). Restaurant on site. Gate guard/security at night, with closed gates after dark.

Cons:

Getting to the KOA from I-10 involves intersections without protected left turns. Close to Davis Monthan AFB and the Tucson airport, so you will hear airplane flight path noise. Price.