When on the ring-road (Grande Raccordo Anulare) that surrounds the city and that you will bump into wherever you are coming from, turn into Exit 1 towards Roma centro, and you will directly reach Via Aurelia. Never leave it, drive on to Piazza Irnerio, and then again until you see the Vatican Walls. At the junction just before the walls, turn right and drive along Via Aurelia. The Aurelia Residence is on your right, at number 145.
Lat.: 41° 53′ 58.2″ N – Long.: 12° 27′ 26.7″ E