Sandra's place is magnificent. The views from the deck are peaceful and stunning. The beach at the bottom of the yard is swimmable and kayakable.
The proximity to the ferry (walkable in 15 minutes) was a major plus -- take the ferry to Auckland, then switch to Waiheke (a must do).
Beachlands is quiet, has a nice restaurant (Ambrosia) and a nice market (Countdown).
The house itself is very well appointed, with spices, sauces, oils, rice, pasta, etc. (Check the house before visiting Countdown). A gas grill makes outside cooking easy.
Easy access (long walk) to parks and larger beaches.
Most of all, Sandra is a pleasure to work with. We loved our stay.