From full-service hotels to little B&Bs, you can find a dozen places to rest your head and still be near the the UW campus when you wake up. If you prefer to stay in downtown Seattle, you will need to arrange transportation to the UW Campus for WordCamp, whether that be car or bus.
Recommended Hotels
Based on proximity and recommendations passed along from the University of Washington
The College Inn
http://www.collegeinnseattle.com/
University Inn
http://www.universityinnseattle.com/