I think all you could do would be to contact AirBnB and the bank. If neither is willing to help, you could contact the bank's regulator or AirBnB's regulator. I think you are going to have to evaluate your chances of success, the amount of money and the level of effort required and go from there.
If your country has the law of escheatment, eventually (several years, probably) the bank will transfer the money to your government and you'll need to prove that you are the person whom the money belongs and the government will return the funds to you.