But don't make the mistake of thinking this will be a passive source of income—you're on call whenever you have a guest and you'll always need to keep the place clean for incoming visitors. On top of just renting on Airbnb, consider offering your guests paid add-ons, like Lauren Gheysens', Royal Day Out in London, England—where she gives visitors a local's only tour of the city, complete with bespoke 18th century costumes.
It’s an excellent opportunity to offer technical training courses that teach people how to learn a much-needed skill, or accomplish an important task. It could also prove to be an important testing ground for your educational courses. If you are able to market your course on the site, against direct competition, you may be able to direct marketing to the general public, using a website, videos, or even an affiliate marketing program.