Uufortunately we were unable to stay in Carmen's flat. The phone number Carmen had given us was an old one so we were not able to contact her husband as instructed on our arrival. This was distressing as it was late in the evening, we are elderly and do not speak Italian. We felt abandoned. Eventually we contacted Airbnb who suggested alternative accommodation, where we arrived after midnight.
Visitors to Rome should be told there is limited Internet connection, unless you connect to someone else's WiFi. Also mobile text messages can be delayed when you enter from another country.
Carmen's flat is in an excellent location but we ended up having to stay further away which spoilt the plans we made for visits on our 5 day stay in Rome.