I just spent a wonderful Christmas at Rongo with Paul, Sanae and Co. I went to check it out because my daughter spent time there on the Wwoof scheme a few years ago and really loved the place. I was made to feel really welcome. The Wwoofers were very friendly and helpful. Nothing was too much trouble.
Rongo is a whole experience. It is about art and music and permaculture. It has its own radio station and you can have a go at being a DJ. There is a vegetable garden you can pick your food from. I've read the previous comments and yes the kitchen gets a bit messy at times but the Wwoofers check it out regularly and clean it up. The showers are an interesting arrangement but people respect your privacy. The water was warm enough for a decent shower and more efficient than some showers I've come across in other places I've stayed. I love the fact that they are using rainwater and solar power; that they use recycled material where possible. We need to be looking at sustainable resources.
The sheets and towels were clean and the bed really comfortable. I stayed in the Green Room for a week and had the best sleep I have had since I arrived in NZ last January. I definitely want to go back there again.