From the highway, exit at EUR and follow via Cristoforo Colombo until via Santa Croce in Gerusalemme. Turn left and then right until via Luzzatti.
From Termini railway station, take underground line A for one stop to Vittorio Emanuele and walk from there.
From Fiumicino airport, take the airport train to Termini central station, change to underground line A and get off at Vittorio Emanuele.
From Ciampino airport, take the bus to Anagnina underground stop, take the underground line A and get off at Vittorio Emanuele.