From Roma Fiumicino Airport
The fastest and most comfortable way is a private limousine: 50,00€ for up to 3 people with luggage and 65,00€ or up to 6 people with luggage. The driver will wait for you at the arrivals gate inside the airport holding a sign with your name, and will take you directly to Holiday Home SPQR.
A public taxi costs 48,00€ (officially approved by Rome Municipality). We advise you to check if the driver applies such a price prior to getting into the taxi. The following are additional possibilities:
Near to the BUS area just outside the exits of Terminal 3 – Arrivals (inside the airport please follow the direction “Bus Station”), you will find a number of private shuttle busses offering cheap (4-5€) transfers to Termini Station: SIT (http://www.sitbusshuttle.com/en/), Terravision (http://www.terravision.eu/), and Rome Airport Bus (http://www.romeairportbus.com/?___store=default_en&___from_store=default), all tickets can be purchased online. Upon arrival, follow the directions given in the above paragraph “From Roma Termini Train Station”.
In addition to these, there is also TAM (http://www.tambus.it/index.php?lang=en); this bus makes a stop at Ostiense Station before continuing on to Termini Station; from Ostiense Station, you will be able to take the regional train FL3 (direction Viterbo) or regional train FL5 (direction Civitavecchia) and get off at Roma San Pietro.
Another cheap alternative is this: from the train station inside the airport take the regional train FL1 heading to Orte (not Leonardo Express, it costs 14,00€ and only goes to Termini Station), that for just 8,00€ connects the airport with downtown; get off at Trastevere Station and with the same ticket take the regional trains FL3 /heading to Bracciano-Viterbo) or FL5 (heading to Civitavecchia) getting off at Roma San Pietro.
A complete map of all regional trains crossing the center of Rome is HERE. All tickets for regional trains can be purchased online HERE.
IMPORTANT: The Roma San Pietro train station has two exits: choose that of Clivo di Monte del Gallo. When you get to street level, you will find yourself in front of the entrance of Holiday Home SPQR, at no. 60.
From Roma Ciampino Airport
In addition to the private limousine service (same conditions as those offered for Fiumicino Airport) and to the public taxi (price officially approved by Rome Municipality is 30,00€ but you are advised to check with the driver if he will apply this price before getting on the taxi), there are also a number of private companies offering a cheap (4-5€) transfer by bus from Ciampino to Termini Station: in the square outside the airport, in front of International Departures, you will find the following shuttle busses: SIT (http://www.sitbusshuttle.com/en/), Terravision (http://www.terravision.eu/), and Rome Airport Bus (http://www.romeairportbus.com/?___store=default_en&___from_store=default). All tickets can be purchased online. Upon arrrival, follow the directions given in paragraph “From Roma Termini Train Station”.