This Airbnb is also known as Kauriglen Cabin Accommodation and is listed in the official Catlins tourism catalog as a self-contained accommodation. I do not know if one should expect commercial-grade services as such, or if I am even expected to write (or receive) a review on Airbnb. But here it goes:
It was a pleasant stay overall, with 1970s decor and quiet surroundings. In terms of location, I think this is a perfect place for one or more nights of stopover between Dunedin and Invercargill. Carol also supplied us with a huge chunk of delicious home-baked bread, milk, butter, jam, coffee, and tea.
This is one of the remotest areas of NZ, so you should not expect to be seamlessly connected with the outside world. There was no Spark 3G/4G coverage in this area (as of Sep 2017) and the host's Wifi clocks 0.4Mbps in download speed, which only allows for basic email and social media services. Leave the outside world outside and come here to relax. :)