If you're planning on visiting Seattle at all, it's a good midpoint place to stay. From the hotel, It's about 30 minutes east to the GW location and 30 minutes west to downtown Seattle. It's a very nice hotel.
The link avroair provided already has the group code filled in, but if anyone needs it, it is GEOGEOA, good from 7/1 to 7/5 for $99 a night.