Generally speaking, be careful of where you stay in NZ if you are traveling without a car.
This hostel is a good 2 miles to the train station and the center of town. However, the little hotel/restaurant that is about a 3 minute walk away is FANTASTIC and receives my highest recommendation. I had some of my best meals in all of NZ there, especially the seafood chowder. When you have no other means of getting food, that place is fantastic (but pricey).
The "single" room I paid for was nothing more than a very small room with a bunkbed and shared *mix-sex* bathrooms. I could have gotten a room at a hotel in town for the same price or slightly more. I think this place is probably quieter than some of the hostels in town -- because it is so far from the center of town.
Another problem -- don't rent the bikes here. They are rusty pieces of junk.