If you're looking for places to stay in Japan, your options just got a little bigger. Japan approved new legislation today that legalizes Airbnb and similar services in the country. Airbnb said in the blog post However, according to Bloomberg, there are some rules surrounding the legislation. First, you can only rent out your space/home for up to 180 days. Additionally, you have to register with local authorities, who have the right impose their own restrictions.