I don't have a ton to add to the (deservedly) great reviews here, except that West Seattle is incredibly underrated, and the cottage was a bit larger than I expected. You'll be an easy walk to all sorts of cafes and bars and restaurants, and a longer-but-enjoyable walk to the ferry and the beach.
Honestly, we stayed here because it was so much less expensive than staying closer to downtown Seattle, and we didn't regret it one bit. I loved the feel of the neighborhood, and might have enjoyed it more than the pricier areas across the water. Highly recommended.