Elizabeth is very responsive and positive, and makes great recommendations for restaurants (Thai: Bang Bar; Pizza: Mioposto). The cottage is super clean and very comfortable for a small space, and is extended to the side with a deck; I personally spent an afternoon reading out there and it was a lovely spot.
Be sure to check out Vashon Island by taking the ferry boat right from West Seattle; it's a short ride and the town has cute shops and restaurants. You are also a short drive from Lincoln Park which has BBQs, picnic tables and shelters right down on the water; such a fabulous view.