Fantastic!!!
Incredible location so close to the metro, food district and ruins, and what a place. Alberto has created an oasis to the traveler looking for high end hotel without the hotel part. We needed another day in Rome but the room was booked, we then confirmed how much we love AirBnB, the hotel we stayed at was a dump, so sad to leave Alberto's place.
Alberto was excellent with communication too, and greeted us with so much information; the best in Rome by far.
One small tip, when getting off the metro at Colosseo, take the stairs up to the street, we were blinded by the Colosseum that we went the long way :)