We stayed here in the middle of the NZ winter, while visiting family nearby.
The unit itself is great- all sorts of things have been thought of for you and the cupboards were stocked with a few bare essentials to support you until you could find the shops.
The cleaning was generally ok, but a bit substandard in places- I found a raisin or two loafing on the couch and the washing machine could have done with a clean out between occupants.
The only other thing that I think needs to be improved upon is the curtains. It took a long time to generate any heat in the apartment, with lots of glass for the heat to leak out from, and overnight we were frequently woken by the light of the very bright moon, because the curtains are very sheer.
Overall it is a good place to stay- but sleep and warmth is likely to be improved by a decent set of curtains in the winter.