Where should I take my wife in the Phoenix area for a weekend getaway?

My wife and I live in Prescott and sometimes its nice to get away and go down to Phoenix when it starts to get cooler up here. I’m looking for a place in the Phoenix area that isn’t too expensive where we can stay for the weekend and my wife can be pampered (e.g. massage, manicure, pedicure, etc.). Can anyone suggest a good place from personal experience?