This is a fantastic house. comes with so many amenities like boogie boards, goggles, snorkel sets, beach equipment, bicycles. Beach and pool towels! the pool is easily walkable from the house. Plenty of space in the house and if your kids love stairs, these are carpeted so even safe for the little ones! the outdoor patio and kitchen/grill enjoy a sunset view and there are patches of grass both in front of and behind the house that the kids can play in.
the only thing I would note as first time visitors to Hawaii (we usually go to Maui's Kaanapali area) is that the location of the property, while private and serene, requires a drive to nearby beaches and shopping centers/groceries or any activities outside of a neighborhood casual walk or trip to the pool. there are walking paths through the lava fields but with young kids you will want to drive.
my favorite thing was taking walks at night to see the lava glow from mauna Loa in the distance!