Last summer, before we were islanders we stayed at a VRBO (vacation rental by owner) house Here is the link. I figured based on my super limited experience I would offer a shout out for a reccomendation...
|Doesn't she look happy here!|
I have recommended it to a couple of people looking to stay on Vashon. Though it isn't marketed to people with kids it was very kid friendly for us (4 kids and 4 adults). Close to the beach but no kids were wondering there accidentally, it was a little walk. Also with a giant yard you can see almost all of from the deck, a great big deck. On the other hand it would be a great place to stay with other adults.
So if your are looking for a good place to stay I recommend it. Follow the link above...read other reviews.