"they’re cleaning inside the flat" in French

Summary

The French translation for “they’re cleaning inside the flat” is ils font le ménage dans l’appartement. The French, ils font le ménage dans l’appartement, can be broken down into 6 parts:"they (masculine)" (ils), "do (3rd person plural)" (font), "the (masculine)" (le), "cleaning" (ménage), "in; into" (dans) and "the apartment" (l’appartement).