Al Centro Storico di Roma offers may different combinations of transport if you arrive from the different airports or stations.
From Rome Fiumicino airport (35 km from Rome)
You can reach the Hotel Augustus by train, the Leonardo Express train stops at the Roma Termini railway station; by car, you can rent a car at the airport; or by taxi, it is highly recommended to take only the licensed taxis.
From Rome Ciampino airport (25 km from Rome)
At the airport you can take a Cotral bus for the Ciampino railway station and there take a train for Roma Termini railway station or take a bus to the Anagnina subway station (line A) and take there a metro direction Battistini and get off at Roma Termini railway station. You can also rent a car or take a taxi.
From Roma Termini railway station (about 1 km from the Al Centro Storico di Roma)
You can take an ATAC bus (number 16 or 36) or take a taxi (it is highly recommended to take only the licensed taxis) to Al Centro Storico di Roma.