OK, Jay...I've been hanging back figuring some of the Seattlites would
chime in. I live in Spokane and have stayed in a variety of Seattle
Hotels. Here's my $0.2:

I haven't found a niche-suites hotel like yours. Not that there isn't
one, but I just haven't found one. Embassy Suites, of course, in
Bellevue is an option.

There aren't any decent hotels near the Museum of Flight, however,
Domenick is right, it's fairly close to downtown-about 2-3 miles.

My favorite Hotel is the Edgewater, built right on a pier on Alaskan
Way. They've always touted that you cna fish out you window. Heck, the
Beatles stayed there! Also, the Inn at the (Pike Place) Market has a
great view.

The usual downtown high rise lodging on 6th Avenue: Crowne Plaza,
Sheraton, Hilton (wierd with a lobby on the 10th floor). Or the Westin
on 5th near Westlake, (two big, tall, and round towers. Cool views).

Older Elegant (but pricey): The Mayflower Park Hotel which is attached
to the Westlake Mall.

Older, clean, and somewhat reasonable prices (for the big city): The
Roosevelt (good food in Von's Restaurant just off the lobby), and the
Vance.

There a a number of good hotels near the airport (20 minutes from
downtown in non-rush hour traffic): Red Lion is the biggest.

Your best bet is to rent a car, (I know, it's tacky in a big city but
the public transit won't get you quickly to the museum and the airport
shuttles just drop you at the big hotels). Rush hour freeway traffic
sucks, just be patient.
----
Al Gilson
1964 Skyhawk
KSFF Spokane, WA