My guess is that you can get better rates at both the Fairfield Inn (Marriott's budget chain) and the Hilton Garden Inn. They are right next to each other on the main drag in Flagstaff (don't recall the name of the road). I was in Flagstaff last October for an evening and stayed at the Fairfield on an award stay. It's your basic Fairfield, nothing special, but clean and comfortable - consistent with the Marriott brand. Of course it doesn't offer the amenities of a Radisson. There is also a Residence Inn on the outskirts of town off I-40.