Airbnb is a website for people to list, find, and rent lodging. It has over 1,500,000 listings in 34,000 cities and 190 countries. Founded in August 2008 and headquartered in San Francisco, California. We’ve stayed at some great Airbnb places and we’ve stayed in some not so great places. We recommend if you use Airbnb to check the reviews and the star ratings for cleanliness. We don’t stay in anything but 5 stars for cleanliness as we want our accommodations to be uber clean and we learned the hard way that 4.5 stars is too dirty for us.