Great place to stay with a large group (we had 8 adults & 5 young children). Rooms and sleepout were comfortable. Although no bathroom in the sleep out there was a basin and fridge. Deck area is great for entertaining, very spacious for kids to play out on as very little lawn space. Not far to walk to the beach or the start of Cathedral Cove walk. We mostly drove to the beach as all our children were under five and the house is located up a decent hill.
The only negative I have to say about the place is when we arrived all the drinking glasses & mugs plus a few plates were dirty. Nothing a quick handwash couldn't fix though.
I would recommend staying here for your trip to Hahei. Bachcare was also very good to deal with, great communication.