I stayed for 3 month in the big room of Lee and Steve's (and Toby's!) house. It was a very nice experience, Lee and Steve are very welcoming, helpful and friendly hosts. They gave me the privacy I needed during the hard-working periods, but they were always ready to chat, to offer help or to give any indication I needed, whenever I needed. They will always be open to share a nice tea, a beer, or a very interesting conversation. They make you feel part of the house immediately.
The house is big and light, and it has everything that any traveler needs, for both short and long stays. Kitchen is fully equipped, the room is spacious and comfy, the backyard is gorgeous and full of fruits and veggies that anybody is welcome to enjoy, and Toby is the sweetest and best educated dog I've ever met. You'll fall in love as soon as you meet him.
The neighborhood is very quiet and safe, located on the north of the city, close enough to reach it in a short commute, but far enough to relax and enjoy the countryside feeling. You will need a car or rely on the very reliable public transportation of Seattle to move around. It is reasonably close to downtown (30-40 minutes by bus/train), UW (20ish minutes) and there's a mall in a walkable distance (15-20 minutes).
I'd recommend this place to anybody who wants to stay close to the city but appreciates tranquility during night, a safe neighborhood and very friendly hosts.