I list my apartment on airbnb and my considerations aren't as divorced from those of my neighbours as you're making out. Most people care about where they live. I don't want my apartment trashed by people using it as a place to party for a couple of days just as much, if not more, than my neighbours don't. I've had dozens of people stay at my apartment through airbnb and they've all been respectful, fantastic guests. I always look through their profiles and reviews before letting them stay, it's a far cry from operating a brothel or crack den. I'd bet my neighbours know less about their cleaners than I do about my Airbnb guests before they arrive.