DigitRoma is a project created by Roma Capitale that offers citizens, tourists and all city users free Wi-Fi access and an integrated platform of services that can be used in the areas of the city with public Wi-Fi hot spots.
No no...digitRoma requires a italian sim for the service log in; the connection is very bad.
There is another wifi service who has just started in Rome. It has been specifically designed for tourists and offer them portable wifi hotspots at very reasonable prices.