Disclaimer: this story involves me exploiting a person in a desperate situation (but in all fairness she tried to trick me first) and this story may not be for everyone.
This happened while I was teaching English in Korea. This was a time teaching in Korea was not competitive and companies treated English teachers like kings.
And by luck, or rather lack of teachers, my company offered me a place with 3 rooms. By being a minimalistic person, I felt that the two extra rooms were a bit redundant and I decided to put one room out for rent and make some of that extra cash.