Conveniently located in the airport just after you land (provided you fly into Phoenix Sky Harbor - please do). When you can't pick yourself up, there is Enterprise. And Hertz. And Avis. The list goes on, though all are owned by one of these Big 3. Choose whichever is to your liking.
April is an Enterprise girlie, just throwing it out there.
Nestled on a golf course in the middle of Ahwatukee this resort has it all: swimming pools with slides, a restaurant, and most importantly, a spa. Feeling bougie? Go ahead, treat yourself!
Basic but economical! And as close to the venue as you can get (>2 miles). There is a pool; a necessary precaution and great place to cool off in the unforgiving AZ heat. Sunbathe responsibly.