The good: central yet quiet location, clean apartment. Close to all the tourist stuff. The bed is comfortable, the shower is good and there's lots of storage space. Kitchen is about average for AirBnBs in Italy. Note: bedroom has no door, only a curtain.
The bad:
1. The Wi-Fi, advertised as "fast," was 15 MBPS down at the most, and often less/spotty. As we were doing remote work, this was not adequate (think 15 minutes to download a PowerPoint file). The hosts insisted that they had never had this complaint before, but there's at least one previous review with the same exact feedback. They did offer us a refund if we wanted to leave, which I appreciated, but we couldn't find another place on short notice so we had to invest in an LTE modem. Lesson learned: ask precisely what is meant by "fast."
2. Host communication was inconsistent, unclear and sometimes not very nice. When I raised an issue or had a question, I got pushback. You can get a sense of the communication style by reading some of the host's previous responses to negative reviews.
3. Not well-managed overall. There were missing light bulbs, no duvet cover on the duvet (even after I asked for one and was assured it would be brought), we had to buy some basic amenities like a sponge to do dishes. The hot water stopped working one night; it was fixed the next day but only after a back-and-forth about how it was probably my fault for flipping the wrong switch (it was not). No house manual with information about garbage, checkout procedures, etc.
I have been using AirBnb for 10 years, and I almost always give (and receive) 5-star reviews, so I don't think I am hard to please. The issues with the management marred what is otherwise a pretty decent apartment.