The caravan is really sweet and has the basics you need to cook. The hob isn't overly powerful, but we managed to make really tasty dishes on it (just adding a bit of extra time to what it would usually take).
The compost toilet is a reasonably pleasant experience, with a comfortable "throne" and there is no gross smell at all until you lift the toilet, even then it isn't too bad. The outdoor shower were our least favourite part of our stay because it was quite windy whilst we stayed and the shower cubicle offered little protection, so very chilly on a morning.
Jazz and family were nice and gave us some good tips for our trip.
It is only a 1 hour drive to The Divide for the Hill Summit walk or 1 hour and a half to Milford Sound. It is a quick 10 minute drive to Te Anau centre for restaurants, supermarket and a lovely lake.