Matuku Moana is a tiny house fitted ingeniously into a shipping container. Here you'll find a queen bed and just space to squeeze in a single mattress if you are a party of three. It has a bathroom with a toilet, hand basin and shower. You'll use The Barn for living/cooking/dining.
Wi-Fi doesn't work inside the container (hey, it's a metal box!) but mobile phone reception works (though Vodafone reception is poor). And you can get Wi-Fi on the deck.
The river is about 15 m away, so you can hear the sound of the water from the cabin.
There are power points and a heater in the cabin.
View from Matuku Moana container.