I get AirBnB as a service, I really do, but it isn't win-win all around for everyone involved, specifically in big cities where real estate is a precious commodity. Neighbors lose by having strangers in their buildings, renters lose out on available space, airbnb customers lose out on protection of the law (though they have the protection of the company, but the two are not equivalent).
Not only have I seen it in my building, but I've seen it in other friend's buildings, in condos that they've bought (I rent). It's a shitty situation for them having strangers consistently churning through the property. Nothing bad has happened yet, but would you want that whole awkward scenario happening on your front step?