@rwilliams1152
I have never been to Mayo AZ, but on Visiting Mayo support group this question has been asked before.

See following discussion:
Housing in Phoenix
https://connect.mayoclinic.org/discussion/housing-for-mayo-phoenix/
Help in Healing Home or "The Village"
https://connect.mayoclinic.org/discussion/experiences-with-phoenix-campus-village-help-in-healing-home/
Accommodiations in Phoenix
https://connect.mayoclinic.org/discussion/looking-for-accommodation-near-mayo-phoenix-arizona/
Do you know about Mayo Clinic's free Concierge Services? They can help make recommendations suited to your requirements. It's worth contacting them if you haven't already.
Concierge services
https://www.mayoclinic.org/patient-visitor-guide/minnesota/concierge-services
By phone 7 a.m. to 6 p.m., Monday-Friday: 507-538-8438
Email: concierge@mayo.edu

Have you asked anyone on transplant team about recommendation? Is there a social worker on your care team? If so, they may have recommendations from previous transplant patients.