We stayed at Williams place and had an enjoyable stay. The house is located about 10 minutes from the beach, and we walked there every single day because it was so close. As mentioned there were the 172 steps up and down, however we looked at that as exercise which got easier each day.
The WiFi is strong, so we had great access to email and calls when needed. We especially loved the top-floor master bedroom, what a view from the bed!
The house is located on a quiet side street up the hill, however it’s possible to walk to the center of Piha with a choice of eateries and great coffee in less than 15 minutes.
The only thing that could be improved is a bigger supply of towels, they may have been hiding somewhere! didn't look too hard and we could of contacted William, however we managed ok. Ideally would have liked a washing machine for the 7 day stay. Helpful hint, leave things in the car that you dont require up in the house, take up the bare minimum, backpacks a lifesaver