According to AirCover: „If we find the issue is protected by AirCover, we’ll get you a full or partial refund, or, depending on the circumstances, find you a similar or better place to stay.”.I choose the last option i.e I asked the support to find me a better place and cover the price difference as I could not stay on the street as a homeless person.
I made a reservation in advance and paid.
I haven't broken the agreement with Airbnb, the host has done it.
It was impossible to find something within the sum I paid for the reservation 1 week before in advance.
Now my refund of 510 AUD will come in 5 days, which means I didn't have the money to pay for a hotel.
Thus, I had to ask Airbnb for finding a better place and cover the difference in the price, but they didn't cover the difference of 1000 AUD and gave me 52 AUD instead which won't make a difference in this situation as all cheaper options were not available.