Always nice, clean, and helpful
I cannot say enough good things about this regional chain; they are like a home away from home for us. We have never had negative experience at any of the hotels.
We have stayed at several Silver Cloud Inns more than 50 times: Lake Union and Mukilteo mostly and Bellevue. Bellevue is a 4 (not quite sure why, just that kind of vibe, maybe a little old?) but the others are 5 stars. The rooms are large and always clean. The breakfasts are appreciated as is the free wi-fi and free parking. 
The real difference is the people. Everyone is extremely nice and helpful. They go out of their way to help in any way they can. (This is in stark contrast to the Sheraton in downtown Seattle.) The service is like that of a Four Seasons but more casual and comfortable. 
The minor hassle of the location of Silver Cloud Lake Union is more than made up by the people and the free parking.