May I ask how a drone can locate your apartment? Because I can easily imaging to give coordinates of a garden with a precision suitable for a delivery but I can

May I ask how a drone can locate your apartment? Because I can easily imaging to give coordinates of a garden with a precision suitable for a delivery but I can't imaging something that can really work in apartments... Perhaps penthouse apartments, perhaps some new apartments with specially crafted sign to be identified with reasonable safety by the drone but certainly not something that can work at a scale...