Just got back from a week at the Pagoda House. We had a fantastic trip to the Big Island and Mary's place played a large role in it.
Our group included 4 couples and 3 kids (22 mo, 14 mo, 7 mo). Though the home isn't listed as family/kid friendly (understandable with a pool), with some baby gear rentals (high chairs, baby gates), we were able to baby proof the house easily.
We all loved the house and had a great time relaxing in the pool, cooking meals and spending time in the area.
The home is definitely secluded and not next to any amenities that you'd find in Kona, but there were great little restaurants and coffee shops just up the hill.
We were easily able to find things to do near the house and found that despite traveling to beaches >30 minutes away our favorite spots were within the immediate vicinity of the house.
We'll definitely be back in the future and would recommend to all of our friends.