From Fiumicino Airport you get straight to tha apartment by train from the airport terminal. You get off at trastevere station and with just one bus stop you get very close to the apartment. The cost of the train is about 7 euro (one way) and the bus ticket costs 1.50 euro.

By train, from Termini station there is the bus "H", that get straight to Gianicolense.

By car, GRA exit "Aurelia" center direction is the most suitable one.