Don't stay anywhere else!
If you are flying into Sea-Tac, there are lower cost options but Cedarbrook Lodge is incomparable for service and comfort. The lodge and grounds are beautiful and the customer service is excellent. The lodge is nestled in a nicely landscaped area and it feels like you are far away from the noise and bustle of the airport but really just beyond the "strip." Excellent food with the complimentary breakfast and a nice fitness center. We stayed here for the ambiance and after a long flight from Hawaii were pleased to spend a restful night before heading home the following morning. The business facilities are excellent too as the lodge was originally built by WaMu as a conference center. 
The light rail system is close by and the hotel shuttle will take you there and pick you up. After a day of sightseeing and shopping in downtown Seattle, you will be relieved to return to Cedarbrook Lodge. I highly recommend the hotel and will definitely stay again.