I live with two housemates. Some days they work from home, if I didn't have an office to work from, my house would become the office. Or more precisely my room

I live with two housemates. Some days they work from home, if I didn't have an office to work from, my house would become the office. Or more precisely my room as both my housemates work jobs that require lots of phone calls. I currently sleep and relax in the same room. I do not want to add working to the list of things I do there.