We (2 kids, aged 6 & 3, and two adults) had a great stay. The beach toys (sand toys, wagon, etc...) were a big hit and super helpful. We enjoyed walking to several nearby restaurants and appreciated being close to a couple of grocery stores to pick up staples.
The house itself is great - two nicely sized and comfortable bedrooms, and a great kitchen space. The outdoor area looked great but we didn't use it much on this trip (it was unseasonably cold in SD - especially in the evenings), but the heat in the house worked really well.
We also appreciated the kids' games inside - a nice touch that we used during some downtime.
We'd book this place again in an instant - great location, amenities and hosts.