We stayed at Al & CJ's place in January 2017 as part of our honeymoon. Firstly it is exactly as described, gorgeous self contained studio above their garage. Very private and comfortable. It had everything we needed to cook breakfast and dinner. We enjoyed using the BBQ area one evening too.
The private beach is small, but lovely. We unfortunately didn't get to use the paddle boards or kayak, but these were readily available should we have had chance.
Al and Cj are friendly and interesting hosts. We'd love to stay again if we're lucky enough to come back to NZ!!