Westin has been running some specials to where the rates are as low as $139 per night. You could also try hotwire and priceline, and get a quality 4 star hotel for a little over a hundred bucks. Of course, it depends on the season and dates though.
The AAA rate at the Marriott is only $135.00. Getting a membership might be well worth the effort of not having to move around. Besides, there's nothing like the security of AAA behind you in times of trouble on the road and lots of other perks with that membership. Heck, I'm half way to talking myself into one too