It's a really cute cottage with everything you need. We were on public transportation with 2 kids and it was totally doable. There's a bus stop about 2 or 3 blocks away and you can easily get to downtown, light rail, or airport which we did.
You can walk to the nearby Trader Joe's and get anything you need.
Kathleen was really good about checking in to see if we had everything we needed and even lent us a baby stroller for our kids to take turns resting when needed because we stayed out all day most days and we couldn't have done everything we did without it. A great little cottage and excellent host. We definitely recommend it and will look for it again should we return.