We had a great stay at Alex’s listing. To sum up the tips from other reviews - take gumboots/shoes you don’t mind getting muddy, and make sure you use the outdoor bath! It was very very cold on one of our nights but there is a small heater hooked up to a generator. Make sure you put the directions into your GPS before you leave Masterton/cellphone reception. Be aware that none of the pubs nearby are open on a Monday night!
The extra touches (hot water bottles, robes, hot chocolates, torches etc) were great, and Alex and his mum were awesome.