From Fiumicino airport : train FR1 into the air terminal (follow the indications for the "Railway Station") direction "Orte - Fara Sabina" - each 15 minutes. Get off at the fifth stop "Trastevere Station" and take the train FR3 direction "Cesano/Viterbo" or FR5 direction "Civitavecchia". Get off at the first stop "S. Pietro Station". From there, walk to the apartment (about 1000 meters).

From Ciampino airport : shuttle bus outside the air terminal to "Ciampino Station" - each 30 minutes. Train FR4 or FR6 direction "Termini". Get off at "Termini Station".
a) inside the station take the train FR5 direction "Civitavecchia" and get off at the fourth stop "S. Pietro Station". From there, walk to the apartment (about 1000 meters);
or
b) outside the station take the bus no. 64 and get off at the last stop "S. Pietro Station". From there, walk to the apartment (about 1000 meters).

From Termini Railway Station : a) inside the station take the train FR5 direction "Civitavecchia" and get off at the fourth stop "S. Pietro Station". From there, walk to the apartment (about 1000 meters);
or
b) outside the station take the bus no. 64 and get off at the last stop "S. Pietro Station". From there, walk to the apartment (about 1000 meters).