@Alina866 I can certainly sympathize with having an Airbnb next door with a host like this. I hate these types of Airbnbs.
One thing to realize is that Airbnb didn't necessarily side with the host, altho it sounds like the host has a bad attitude. For one thing, Airbnb will never tell anyone what action they have taken against a user, be it host or guest. So for all you know, they could have flagged the host's account and if he gets more complaints of this nature, perhaps suspended.
And what happens with parties or unruly guests is this: most hosts are actually distraught to find there's a party going on, or that neighbors are being disturbed. Unless the place is a total dump to start with, no one wants their house trashed.
When hosts have this scenario, they often call Airbnb, expecting Airbnb to do something about it. But Airbnb doesn't have field agents who are going to come to the house and read the guests the riot act, or boot them out, that is up to the host to handle.
So when you have a host who doesn't seem to care, that's unfortunate.
What exactly did you expect Airbnb to do about the cars blocking your driveway, though? It's one thing to report a host who runs his Airbnb in a way that disturbs the neighbors, but what do you expect a lowly rep in a call center on the other side f the world to be able to do about cars parked in the wrong spot? If it was illegal and unsafe, why not call local law enforcement to tell the guests they have to move their cars?