The Phoenician is were Bush stays when it comes to the Valley . I would look into the Four Seasons at Troon.
http://www.fourseasons.com/scottsdale/ its great area to relax and excellent service. Its in North Scottsdale , If you prefer to be near the city I suggest anything from Scottsdale Road & Chapperal Road to Scottsdale Road & Double Tree, so many resorts o pick from on that strech of the road.