Avoid the Westin!
Well, I would certainly NOT recommend the Westin. Very disappointing and not all that clean,either. Rather, a smaller hotel would be better, really. Hotel Max is a good choice: gives the flavor of Seattle,is clean and well located. Besides,the restaurant there is excellent and the service is impressive The Red Lion is located centrally and is well run,but a larger hotel. (this hotel is the fave of many people I know) After trial and error, I always choose these. There are various theatres in the downtown core and the Benaroya Hall,of course, often has tempting line-ups. Seems like Capitol Hill would be better suited for hipsters looking for a scene at night...better for your parents to google events...or, maybe they would like the Can Can Club...it is walkable from downtown and kinda fun.
Unique Quality: The Hotel Max has interesting art and an excellent restaurant too. The Red Lion has consistently good service, clean rooms and has the best location. The Westin has been a disappointment: unclean rooms, inept service and , even, on one occasion there were pills on the floor....they allow pets in the rooms,so if your pet had ingested these...yikes. And, if you are allergic to pets...best not to rent a room here. Also, the location is not all that great.
Try the smaller hotels...or the Red Lion if you want to be certain of consistent service and great location.