We stayed at the Pointe Hilton Squaw Peak once and we really liked it. The pool area was great (and we didn't have any kids back then either!) and the room was nice too. They had a bunch of quiet pools too, I remember one in the courtyard of the building we were in. We also went to the Pointe Hilton Tapatio Cliffs to go on a trail ride, and that resort looked very nice too, maybe even nicer than Squaw Peak. We looked into it, but it was a little further north than we wanted to be, but after seeing it, it really wasn't that far and looked very nice.
We've also stayed at the Hyatt Gainey Ranch, which I thought was a beautiful hotel, and they had lots of nice activities for the guests, including a great wine tasting event (again, no kids back then!). The restaurants there were pretty good (better I think than Squaw Peak's), but really we ate out most nights anyway.
2 other gorgeous hotels we've stayed in are the Fairmont Scottsdale Princess and the Phoenician. We were there with conferences so we didn't have to worry about the high price tag, but maybe in the summer they're not too expensive. (When we looked for a place to stay this Thanksgiving, the Phoenician was $850/night!! It was a suite cause that was all that was left, but still!) There's a restaurant at the Princess that has great breakfast items-fluffernutter french toast, for example-so maybe go check that out one day if you're in that area.
I know it will be hot, but there's a great zoo, called World Wildlife Zoo that is about 30 minutes outside Phoenix. It's smaller than the Phoenix Zoo (which I also thought was a great zoo), but unique and worth seeing if you're into animals/zoos and it's not super hot (I'm guessing you'd have to go in the evening). Out of Africa Wild Animal Park is pretty nice too.
I also agree with making a stop in Sedona if you have the time, it's an absolutely beautiful area. So pretty, in fact, that my mom and I had to pull over to take photos of the red rocks on the side of the road cause we couldn't get over them. The weather there is very nice, and it has a cute little town area to explore. We stayed there overnight on the drive back to Phoenix from the Grand Canyon, at Los Abrigados, and it was a very nice resort (they're all mini-suites) and we enjoyed the area.
We're going to Phoenix for Thanksgiving this year and are staying at the JW Marriott Desert Ridge so I'm glad to hear that this is a nice resort too. I'm hoping it will be warm enough to use the pool while we're there. We plan to move to Phoenix in 4 years, we love it there!