ok here's some results from my quick check for the cheapest hotels downtown during your time you're thinking about coming here. I have not stayed at either of them, but I am sure they're ok:
Holiday Inn Express Downtown on Broadway - $103/night
http://www.ichotelsgroup.com/h/d/hi/...uestid=2166009
Best Western Convention Center - $120/night
http://book.bestwestern.com/bestwestern/selectRoom.do