I would guess the hosts have done a good deal of traveling, and then used their experiences to build an idyllic place for travelers to stay. There are many wonderful features, both obvious such as the amazing kitchen set-up and comfortable bed and sitting areas, but also some of the smaller details such as an abundance of recessed lighting, light switches & electrical outlets throughout, and high quality fixtures (faucets, cupboards, etc). It was very spacious and a comfortable place to call "home" for 8 nights.
The location is fantastic - close to 45th and the heart of Wallingford's retail/restaurant area, as well as the smaller but quaint "Tangletown" area on 55th. And, of course, the playing fields and running/walking trails of Green Lake were minutes away by foot.
One small thing to keep in mind, it is a basement unit and you will hear footfalls from the family upstairs. But this was only during the daytime, and there must be some soundproofing because we never heard voices or television sounds - just footfalls, and again not in the evening.
Our only negative is we had a bit of trouble with Internet connectivity during our stay, with intermittent access for the last half and finally completely down the last two days. Hopefully just a glitch with the ISP/router, but it wasn't resolved prior to our departure.
Nevertheless, we recommend this unit for any couples or families traveling to Seattle! They are set up very well for people with children; tons of games and kids books!