John is a fantastic host. I had a very sweet note and welcome goodie basket waiting for me upon arrival. The instructions for access were perfect and I had no problem getting in after a very long day.
One thing to mention (with absolutely no reflection upon the host) is the environment of Seattle-downtown in general. As a frequent business traveler to downtown Seattle, I'm quite accustomed to the environment and culture of downtown (including the goings on with the homeless/drug problems), but it's probably worth it to let out of town travelers know that Seattle, like most other big downtown areas, can have some questionable areas, so if you aren't used to 'urban' you could be a little surprised or even feel uncomfortable with the area that this place is located in as it is not in the main downtown area and is not particularly "touristy" in feel.
This is definitely an older building, but John has done a fantastic job of updating the space to a modern feel and it has all of the amenities you could ever need, including a washer/dryer. One item of note is the radiator (definitely a relic). It does make some noise at night and could be concerning if you did not read the detailed "about" the property that John has so kindly provided. I fortunately did read this and it was not a problem--- simply turned it off before going to sleep.
I would definitely recommend this place and would not hesitate to stay there again.