Having stayed at a lot of Courtyard's, the quality does differ quite a bit from each hotel. The Bellevue downtown one however was excellent in all accounts.
The staff was attentative, but not annoyingly so, which is a fine line. The lobby is spacious and the hotel bar is actually quite good and well split form the main lobby. There is also a Starbucks below the hotel. The location of the hotel is really excellent as everything in downtown Bellevue is just a few blocks away: restaurants, malls, bowling alley etc.
The gym is quite small, but has a set of weights and a few bikes and running mats: it's enough. There's also a pool next to the gym.
I stayed in a single room, which was really comfy and big. The work desk was great as was the chair and there was a couch and sofa table as well. All in all, nice and spacious.More