@Steven1239 You clearly misunderstood my responses. I was trying to point out a guest's best chances of getting refunded and totally sympathize with the intolerable noise situation and the seemingly uncaring attitude of the host you have been dealing with.
No, Airbnb doesn't favor hosts- they are equally bad at dealing appropriately with both guest and host issues. Good hosts are not biased- bad hosts who aren't responsive to legitimate guest issues give Airbnb and therefore all hosts a bad name. A host who allows loud partying to go on unabated should be booted off the platform.
Airbnb customer service is outsourced to a 3rd party, with reps who are untrained, unhelpful, give out erroneous and bad advice, and act like robots reading from a script rather than assessing a situation on its unique circumstances.
Hosts and guests are not antagonists- it's a symbiotic relationship that works great when both parties behave responsibly and respectfully.
When one end of that falls down, in your case the host allowing this disturbance to continue, and Airbnb gets involved, things can really go south.
You should have been allowed to cancel and get refunded for unstayed days as soon as it was clear that the host refused to deal with the noise issue. If I worked for Airbnb that sure would have been my decision.