We snowbirded in AZ for five winters before moving to Wickenburg last year. We reversed our lifestyle so we could stay put in the winter and travel north in the summer.
You didn't tell us what your interests or activity level was so I'll just give you what we did for five winters staying anywhere from a week to a month in various places.
Lazy Days KOA in Tucson is over the top nice. Lots of amenities. Lousy part of town but safe and gated. Tucson has Mexican restaurants on every corner. Museums of every description. Titan Missal Museum, Saguaro Desert Museum, Pima Air and Space. Copper Mine tour, Tumacacori National Historic ParK, Wisdom's Cafe, San Xavier del bac (Sistine Chapel of the west) on the Papago Reservation.
Apache Junction has too many RV parks to list. Gold Canyon is over the top for social geezers and just a nice park. Lost Dutchman State Park is over the top if you like to hike. Most AJ is just a big ugly busy suburb of Phoenix.
Yuma is a great place. We stayed at the Palms which is another snowbird heaven with full amenities. If you have Jeep or ATV there is at least a 1,000 miles of trails in the area. Go across the boarder for cheap teeth cleaning, drugs and glasses. Don't miss the museum at the Proving Grounds and watching the parachute jumpers at the jump school.
McDowell Mountain Regional Park in Fountain Hills is one of the nicest places we have stayed especially if you have a mountain bike or like to hike.
We settled in Wickenburg because we are avid UTV drivers. The first year we drove over 1,500 miles in four weeks. A Jeep will get you many places as well. Several RV parks but pretty limited. We stayed at Desert Cyprus. If you like to boonedock it is over the top. Huge winter snowbird population and the cowboy team roping capital of Arizona.
If you following any of our suggested tracks you should make your reservations now if you can. If you wait until later many places will already be full for prime winter time.
2016 Winnebago Journey 40R
2018 Rubicon
1982 FJ40 Toyota Land Cruiser
2020 Keystone Outback 327CG
2020 Dodge Ram 2500
Polaris RZR XP 1000
4 Cats
3 Dogs
1 Bottle of Jack Daniels
Two old hippies still trying to find ourselves!