We have stayed in Seattle often, and a few times in an Airbnb - but this is the first time we have stayed as close to the centre as Belltown. We are glad we chose this apartment and location.
The apartment itself was comfortable and reasonably spacious for two people. It had a full kitchen and washer/dryer, which we didn't need on this short stay but would make use of for a longer stay. We felt absolutely secure in and around the building, and it was surprisingly quiet inside too!
A real plus for downtown Seattle is that it includes a secure parking spot. Be warned that the space will not easily accommodate anything bigger than a compact car - but the fact that we could leave our car there and walk to so much - the art gallery, Pike Place Market, restaurants, downtown shopping - was ideal.
We would stay here again, and for a longer time too.