The place was very cozy. I didn't miss anything. As soon as I arrived, I could put my feet up and rest after the long flight. The bed was perfect - not too soft, not too hard. Hearing the footsteps from the floor above wasn't a problem at all.
I choose Manuela's place because it was close to Google's offices, so I could walk there (a nice 10 minute walk along the canal). Next time I'm in Seattle, I'm definitely booking Manuela's place again.