There are also a few Apartment complexes up North that would work too. I am sure they would accomodate a 3 Month winter visitor and they are 5 miles or less from the Range. I could get the numbers to them if that would help.
Phoenix is huge so Make sure you are not dericted to something that is a long way away.
include reasonably close RV parks in your search, a few years back I looked at places to stay here in Tucson. A surprising number of RV parks have all types of homes and RV's that they have purchased and rent, on weekly, monthly, seasonal and yearly schedules.
Bell Road at I-17 has a Super 8 , a Motel 6, A Fairfield Inn, A Red Roof,and a Quality Inn, probably more in that area. There is a Hampton closer, at Pinnacle peak and 17, and a Studio 6 extended stay at Union Hills.
The I-17 Corridor is loaded with lodgings, You can find Your favorite on that road.
We Had an all you can eat Breakfast at the Waffle house there once, just before shooting.