My photo did not load up will look how to do it.
My Mum lives in Renwick but when I went back in Feb 2014 a neighbours friend leant me a MTB but in Blenhiem there is a bike shop that rent bikes out.
But next time I would take my own. If you need some contacts let me know.
Go to the South Island, the sounds,Renwick for good wine and over to Nelson and the Takaka hill, that's in the photo.I lived in NZ when I was a kid.
If you ever come to Portugal we have great riding here and cheap accomodation.
Enjoy your trip.
http://campingfigueira.weebly.com
Move to Central Portugal from Uk 5 years ago where we have a small campsite with a studio and bike hire.