Jon and Kathleen's place is awesome. Comfy bed, closet and dresser for your stuff, full kitchen access, and it's a decent location pretty close to the train. (Like 7-9 minutes walk or a quick ride on one of Seattle's many hop-on scooters or bikes.)
Jon and Kathleen are also super super nice and welcoming, helpful if you need anything. It's an ideal place to stay. As long as you don't mind climbing stairs, haha!