My experience with the host is amazing. Her service-minded attitude is what an AirBNB host needs. Like other people mentioned, a basic phone with an Italian sim is provided and we have a peace of mind when getting around Rome.
The apartment itself is a huge one, despite the fact that it is pretty much in the location where we can go anywhere, especially being so close to metro and regional train stations helped us a lot, as we only used public transport there.
The apartment has everything we needed for 4 days in Rome. A supermarket is close by as well.