I appreciate your reply, @Anonymous. Guests wanting to enjoy their time together is of course reasonable. You're making an assumption however about the noise that prompted me to post this. I've been hosting in the same house, same living situation, for several years now. Only in the last couple of months have the guests been so crazy. No amount of sound-proofing -- which I already have -- can mute music turned up loud with a subwoofer going full bore.
These aren't people "enjoying precious moments of leisure time with their loved ones", these are kids partying loudly. Santa Monica requires hosts to stay on-site for short stays precisely to keep such partying from ruining neighborhoods. They don't allow this in hotels and the city didn't want our scant open housing to turn into unregulated hotels where anything goes.
As I mentioned, this is a new situation -- possibly triggered by COVID. These are kids pooling their money and instead of traveling, they're renting houses locally and behaving as if they're in Las Vegas at a club, not in a quiet residential neighborhood. It's a recent development, and I was looking for trips to screen them out. Having a bad fit does nobody any good.
If they can't be screened, then so be it. I'll communicate more up front to be on the same page before booking. Cheers.