The place was superb!
It’s located in a quiet neighbourhood but rather close to the city center (only took us about 25’ walk to Colosseum and Trastevere). Looks like pics on Airbnb (slightly smaller, but that’s always the case), has everything you might need including air conditioner. Massimo was great, agreed to greet us slightly later than the possible check-in time. We do recommend going to the restaurant “da oio testaccio” located on the ground floor of the building.
P.S: beware that the building has no elevator and you may have to climb 4 floors up with the suitcases!