From Fiumicino airport it is possible to reach the city center by various means:
1) TRAIN: the Leonardo Express (journey time 31 minutes) costs 14 euros for a single ticket. The line FR1 Sabina -fiumicino costs 8 Euro and is not direct. Both arrive at the Roma Termini station. From Rome you can take the Metro Line A direction Battistini, Ottaviano stop. Via Ottaviano 105 is just outside the metro.
2) BUS: there are 5 companies that arrive at Roma Termini and from Roma Termini. You can take the Metro Line A direction Battistini stop Ottaviano. Via Ottaviano 105 is just outside the metro.
3) TAXI: arrives in about 45 minutes, depending on traffic, costs 48 euros (pre-determined rate)