I made the reservation 2 months in advance and paid the rent.
Everything was fine until the owner changed the house description on Airbnb one week before I arrived, and informed me that she only provided 2 bedrooms because I paid for 4 persons. Besides, she insisted to collect 100 AUD per week for air conditioner because she just installed a new air conditioner. I argued with her by email that her requests were not consistent with former description. She told me to feel free to cancel the reservation if I wanted to search cheaper place.
However, I had no other choice at that time, because it was too late.
It was not my first time use Airbnb in Sydney and I felt disappointed this time.
I have to say, after I agreed to Mel's request and paid the money, other things went well. She was nice to us and provided necessary help during the trip.
WiFi was quite slow.