i think there's at least one room in the apartment that is pretty small, so it has become the "transient room", meaning people are coming and going from it quickly. maybe he moved into it temporarily and took over one of the larger rooms when someone else moved out? she's not really bothered about what kind of roommate someone is as long as they ask her before using her stuff, otherwise they can typically exist however they want in the apartment so even if he was terrible she probably wouldn't care. she's a blogger! a la a modern rookie mag with a side bonus of a high chaos tiktok presence.