We liked this flat very much and its one of the best we've visitied so far. Why? I believe from 3 viewpoints:
1. location: one of the most central, close to piazza Navona, Pantheon etc. Has its own entrance without ladder, corridors etc, literally your door is facing the street. A downside however, you hear some street noise at this room (as the flat situated on 3 floors), however as its a kitchen+living room (not a bedroom), shouldn't be a problem at all.
2. attention to details. We've seen not many flats at Airbnb at all that has such a great degree of attention to details! It seems that this flat was for living of the owners but not for the rent meaning that you will have most things needed during your stay. However unlike some of the flats that are ocassionally rented by the owner on leave or first time, it doesn't have too many things that are personnal to the owners, taking place and NOT needed to you at all (we are trying to avoid such flats). In this flat you will find a properly-working umbrella (even couple of cheap raincoats), TVs in all bedrooms and the living room, Airpod with good selection of classic music+small audio system in the living room in front of a treadmill, some useful consumables in the kitchen. Some room-perfums in the bedroom, lots of decorative pillows, good and varied lamps around the flat (you may not need to have your windows open because of good lighting!) cable TV, fast wifi, even a cordless phone with local landline if its needed at all (we didn't try).
3. High quality of some of the things such as for e.g. AC Sharp, invertor-type, very efficient while quite. Smart TVs Samsung, home appliance Bosch, Grundig, Philips etc. Even washing machine with dry function Indesit or Asiston (dont remember exactly). In many flats you find quite cheap solutions of that, sometimes not properly working...
We stayed in this flat for 4 days. Perhaps, if we stay more, we will find more drawbacks of this flat. However, the one that we found (it may not be a drawback for you) is a spital staircase that connects all 3 floors. Nothing wrong with it generally. However, if you are on a foot for the whole day in Rome and back tired - it will be a bit difficult to go up and down many times in the evening.