I also have a Palm Springs home, and had one guest that AC wasn’t cooling down fast enough, and another with the pool being too hot. We let our guests control the AC, and it broke on one of those 110+ days. We had a technician out same day, but refunded guest one night plus some for the inconvenience. Obviously my AC was not working for a few hours resulting in indoor temperature of 80 degrees, so slightly different than 15 minutes. With the “pool too hot” comment, it’s really just about educating the guest that it is naturally heated. Best of luck!