SEA, SFO hotel suggestion
Mayflower in downtown SEA is a pretty good hotel. Great bar, good resturant and very much in the middle of town. Number of airline crews use it. It the oldest hotel in SEA, but don't let that turn you off. Numerous other big name hotels Marriott, Hyatt, Westin all downtown with the usual prices.
Just stayed at the St Francis in downtown SFO. Don't bother as it is very over rated unless you are in the newer tower section. Good location, but that is about all you can say for it. The Renaissance on Knob Hill, formerly the Standford Court is pretty nice and it is a Marriott property if you are a points whore. Great location as long as you don't mind listen to the cable car bells all night.