My husband and 2 year old stayed in the apt for a 4 day sightseeing trip.
The location was great - we had our own car and found it very convenient. We found Seattle quite congested and busy, and it was nice to have quiet neighborhood to "escape" to, but still be within 15 minutes of Pike Place Market, etc. The apt is probably about 10 minutes from 5 freeway, just a couple exits north of Seattle Center, etc. It's in a nice, safe area (with a nice private school down the block) with plenty of restaurants and shops (near Whole Foods grocery store & Safeway) within a short driving distance.
The apartment itself was just kind of average. Liked the big tub, garden, and kitchen.
Didn't like that the bedroom is not completely closed off from the rest of the apartment. There is a door, but the wall does not go all the way to the ceiling - there is an open area of about 3 feet between the top of the wall and the ceiling. So, the bedroom is not closed off from sound from the rest of the apartment - tough when trying to put our daughter down early for bed.
The bed squeaked quite a bit - to the extent of waking us up when someone rolled over.
This is unusual for Seattle, but we visited in August, and the apartment was SO hot in the afternoon/evenings. Even with all the windows open, it was very warm. I found myself sweating every evening while trying to relax and watch TV. (Overnight, it cooled down so mornings were pleasant).
Finally, the apt lacked any kind of "directions." Washing machine didn't work without sticking a wooden rod against it to keep the door shut, but there was no signage- we didn't find out till the owner called us back 7 hours after we called. Couldn't get hot tub jets to work. There was a "welcome card" but it simply gave our bill and what to recycle - nothing about how to work anything in the apartment, local restaurants, etc. We would have loved that info, since we never met the owner.
Glad for the location and great price, but prob wouldn't choose apt again for us personally.
For a family with older children, or a single couple, visiting NOT in warm August, it would probably work out fine! The price was a LOT cheaper than any other lodging we could find in Seattle, so it would be worth it if you'll be out all day sightseeing - a good place to return to in the evenings.