The location of Kowhai Lodge is beautiful and trail on the property allows for a nice hike to good views. We paid for the hot tub, which could have been a little cleaner, but despite this was a highlight of the stay. Looking at the milky way from the comfort and relaxation of the hot tub was magical.
It is worth noting that what you're paying for is not a stand alone building, but a duplex with a shared wall and common area at the back. A family with three kids were there at the same time as us, and we could definitely hear them through the wall, but they were pretty well behaved, so it was OK.
The lodge inside was very clean and the kitchen had everything we needed. There really isn't much else around, so make sure you do bring your own food to cook while you're there.