My favorite is Starr Pass
in Tucson - it's very new (less than 3 years old) - smallest room is about 430 sq.ft. - spent 60 nights last year and was always upgraded to a suite and always had welcome gifts (bottle of wine, plate of cheese, fruits etc.) in addition to the welcome amenity.
Extremely friendly, courteous and professional staff (with astonishingly low turnover!!!)
And the golf is spectacular! ^