Overall: if you expect to book an Airbnb experience, know that you don't, as described in the listing.
Paolo: well organized (too much?), nice welcome with local recommendations, many messages/emails about house rules, reviews, etc. and extra services (i.e. like in a hostel), making it a less enjoyable experience.
Overall a good business transaction.
Flat: conform to pix, well arranged and equipped (i.e. fridge, TV) with the minimum necessary (kitchen towel missing?), nice orange decorations; but paper thin walls (noisy neighbors with children and crying babies, could hear every time someone else used the bathroom).
Thanks for the orientation maps and recommendations!
Location: well situated in Rome. The apartment itself is in a former basement, the entrance is through a small alley from a calm courtyard.