Official web site of the city of Seattle
www.seattle.gov

Seattle Visitor Guide
www.seattlehotelbookings.com/seattlevisitorguide.htm

Seattle’s Convention and Visitor’s Bureau
www.visitseattle.org/visitors/

Information site about hotels, restaurants, attractions, and events in Seattle
www.seattle.com/

Information and several visitors guides
www.seattle.net

Also check out the Seattle travel guide from wiki travel
http://wikitravel.org/en/Seattle