We couldn't be more thankful to them... We sadly had a car accident about 3km away from their home upon our arrival. And they helped us throughout the whole procedure with the rental company.
As we're not from NZ and native English speakers, their help was truly what we needed.
Also, without any means of transportation, Phil took the time to drive us around to several lakes that are nearby, to the salmon farm, a LOTR spot, etc.
They also recommended to us a lovely track that's following the river from the town centre back to their house.
I would highly recommend you to spend some time with them if you come to Twizel. They truly are nice people.