Yeah, our neighbor pretty blatantly runs an illegal hotel out of her house in Brooklyn. Usually it's fine but she often has young, European guests who like to party in her backyard (about 10 feet from our bedroom window) until 6am. Luckily this is reserved for weekend evenings (most days) so we don't complain; though if it got out of hand, it might be nice to have some alternative to (almost never enforced) noise ordinances.

That said, I'd rather live with this than cut off opportunities/efficiencies created by airbnb!

To solve the noise issue, lower the burden of proof for noise citations for people who are renting out their apartments as hotel rooms. When landlords have a stake in keeping the noise down, it seems like it would be easier to keep in check.