I reported a party at my Airbnb but my listing got suspended! This is another instance where Airbnb is never on hosts' side.
My advice to all is when you know your guests are having an unapproved party, deal with it yourself. Leave them a bad review or charge extra cleaning fees instead of talking to Airbnb.
@Rosa210 I do wish @Catherine-Powell could explain why, as a superhost, when you report a party you get suspended. It comes across as Airbnb not wanting to actually deal with the party problem. Perhaps try asking them this question on Twitter and see how they respond publicly.