It's not Airbnb, it's a simple 2 star hotel located on 1st floor of an old building.
Location is very good, hardly 2 minutes from metro station and near to colloseum and roma termini station.
Good to stay for a day or two. Mind city tax are not included in it, so they will ask for 3.5 euro per person per night tax which needs to be paid at the of check in.