AirBnb is a terrible, terrible company. Most of their money comes from corporate-owned mini-hotels yet they advertise as a mom and pop shop. At every turn their solution is to sue small towns and cities so they can continue to extract wealth from our neighborhoods. Disgusting.
You can see it is such a convenient place for illegal business and money laundering. Some Airbnb has hidden camera for you know what it does. And as a matter of fact, many Airbnb in Japan is ran by the yakuza. They will use a pretty girl as profile pic. When you call the host, it is a yakuza guy respond to you. Actually, no problem with that as long as it is a smooth trade, but if something happens, god knows who can help you. And Airbnb only care about the host and don't give a fuck about guest.
I won't say don't use Airbnb, but just be reminded that use it if you can take some risk for some adventure.