My boyfriend and I had an incredible stay in Seattle because of some great weather and the great location of Sarah's apartment. Belltown is a great neighborhood and just far enough outside of downtown to feel like you're out of the traffic and hustle/bustle - but close enough to walk to everything from the Space Needle to Smith Tower. I highly recommend checking out the public balcony on the 7th floor of the west building - the view is absolutely incredible and is a great spot to watch the sunset (if it's dry of course).
The apartment itself was very spacious with all of the amenities you need. The check-in and check-out procedures were a little more extensive than I am used to but I guess that's when comes with the territory sometimes.