Had a nice and memorable stay. Building and furnishings were mostly original/antique which was part of the charm, but also meant the bed and amenities didn't match what we might expect from a modern hotel. Knowing this going in (in part thanks the accurate descriptions from the owner!) helped us set expectations accordingly.
The surrounding neighborhood was wonderful with tons of walkable places to eat (open late as well!) and cultural landmarks. We also utilized the streetcar and light rail, both just a couple of blocks away, to get to/from other nearby neighborhoods. Noise level was as expected for downtown Seattle.
Our one suggestion would be to invest in a combination lock or provide a key for guests to use to enter the building. The owner was great, but we felt bad having to rouse her every time we came and went from the building, and there were times when we didn't get an answer right away.
As an aside, the tea house was top notch and worth visiting even for non-guests.