The Spotify part though, isn't part of cleaning, if that makes sense? It happened that she has found an enjoyable aspect to the tasks due to its nature, but not that she specifically searched for that job because it lets her listen to Spotify.
I can confirm this, I know a cleaner like that as well. Additionally the work is not that physically taxing for the most part and there is no struggle involved like in many problem solving jobs. It‘s often poorly paid but that depends a lot on the country.