I'm also in NZ, in Taranaki actually, have been going since just before Easter. Evereything's cool except for one incident:
the booker (in Canada) booked for a one night visit with 3 others in November. I received the payment, but I then had to try to explain to her she owed another $60 for our linen service charge, which is carefully explained in our homestay description. There is no way on Airbnb to have a linen charge (unlike other sites we use), it has to be charged as 'cleaning.' So on advice from the Forum, I sent her a request for payment through the 'special offer' facility. Well, she spat the dummy, booked elsewhere and cancelled me saying it should have been part of the tarriff. Another guy (Utah) who booked for June, was quite happy to pay the extra charge.
The Canadian lady contacted me a few days later to say she had been charged twice for her cancelled booking. I can confirm the two amounts are in my bank account. I didn't realise at the time they were both for same booking. However the transaction record shows she was refunded once.
She has calmed down and we are talking. It was her first experience of Airbnb and she is not happy. I said I would go into the Community Forum and get help.
So what do I do? Is there any way of refunding her through Airbnb or do I have to make a credit to her bank account? And what about Airbnb's deductions?
Incidentally, as a result of the above, i have added a 'cleaning' charge of $80 to cover the provision of linen and towels etc.