I like the Biltmore for being in town and close to mountain biking trails, but the Boulders in Carefree is my all time favorite spoil me wrotten place.
We just returned from a week at the Boulders. We stayed in one of the Pueblo Villas which is really a 3BDR house with kitchen, laundry room, etc. It was HUGE for me, my wife, and son. We had a GREAT time. My only caution is that these units are a bit dated and worn - we had a few issues that needed fixing including the hot water tank and washer. I think these we really just a function of the age of the units. Everything else was quite nice and the staff was incredibly helpful and my wife's spa day was truly wonderful. It is quite a drive from the main part of Scottsdale (it is in Carefree) but we managed and enjoyed seeing some of the old places we used to go when we lived there a decade ago. Thanks so much for the suggestion.
We plan to go back next year and might try another resort as we both prefer new hotels and amenities. The weather was fantastic - high 60s and sunny every day.