Have you looked at the Suncadia website?
It is just over an hour from Seatac ~ about an hour and fifteen to an hour and a half from Seatac, depending on traffic and the pass . It is located on the other side of Snoqualmie Pass. It is a relatively new (3-4 yrs) high-end planned resort community with both lodges and individual residences developed by the same folks who developed Bend, Oregon, with an emphasis on golf. Suncadia is located outside the town of Cle Elum. Area is high in natural beauty, most of the activities in the area are centered around outdoor/nature.
There are both lodge accommodations and home rentals available. The new lodge is huge - I can't imagine how they will be filling it, though it seems like their target is small groups, conventions, weddings, etc. I would look for favorable rates and "deals".