I visited Seattle in Spring Break, to attend the Grad Cohort 2008, organized by the CRA-W. There were a bunch of talks, a LOT of networking, and some good food as well :)
The Bell Harbor Conference Center was right at the Waterfront, with some beautiful views of the water, the Marriott was nice, but not great (my first stay in a good hotel though), and the evening reception was awesome fun ! (100 women dancing, Baileys+Cream and some margaritas added to the fun)
And a lot of interesting people, with a lot of interesting conversations - CS, culture, life and all.