As we were attending and exhibiting at an expo at the Washington State center, we decided to stay with 4 people nearby.
Communication was very clear and rapid(!) and the stay went smoothly. Location is perfect and in the center of everything. Check out the roof terrace amazing view.
If you are staying here with more than 3 people, please note that there is one bedroom with a double bed and in the living room there is another double bed and two other single beds will be placed. It can be a bit cramp. We were ok as we were working the whole day and just came back to sleep. So for us it worked out.