We visited for a week to do remote work in Rome during the daytime. The wi-fi simply disappeared the first night and never came back. As engineers we soon found out the issue was not trivial.
We contacted the host to solve the issue the morning after (and every day thereafter). They promised to get backup internet running if the issue couldn't be resolved.
The promised backup internet was never installed (they did take away the router), and we never heard from them again regarding this issue, until the last day when they simply told us it will be fixed in a few days – which was obviously useless to us.
The apartment location was good, the furnishing was good too. However, the communication was bad.
We asked for a spare key twice. We did not get a response, they completely ignored the request both times.
In the Airbnb description it appears there is a host at the property, so we gave notice at what time we would arrive – no response. When we arrived there was no sign of life (e.g. no sign of Airbnb key lock, no host, no logo etc).
We called the telephone number in the Airbnb description meant for "emergencies" to get someone to come over. Not to say it is horrible to wait for 15 min, but the Airbnb description could be upfront about the steps to get in (i.e. call & wait at the door).
All in all not a great experience, although the apartment itself is OK, and it has a washing machine which is nice.