I like to stay at the Paramount Hotel. I also enjoy the Underground Tour, Sub Seattle Tour and the boat rides from Argosey Cruises. Buy the Seattle City Pass and you have a nice smattering of things to do while you are there. Enjoy Seattle. Easily my favorite travel destination.
I just stayed at the Paramount. Such a great hotel! And the Underground Tour is awesome as well. Definitely go to Pike Place market on an empty stomach, and of course go have a meal at the revolving restaurant in the Space Needle. Also, you HAVE to get some donuts from Top Pot. Easily the best donuts I've ever had.
I will have to hit Top Pot the next time I am there. So many great places to eat in Seattle. A quick lunch at Steamers or a sit down meal at Ivar's is always good.