Had a fantastic time at this lovely B&B, with extremely friendly hosts including Marley the dog! The 'Hollywood' room was spacious and made up every day, with good wi-fi. There's a private bathroom opposite, with a good hot, strong shower and well stocked with toiletries and towels.
Time for breakfast was agreed the night before, I think there were other options but I had croissants with homemade jam and freshly made cappuccino every day. There are some maps etc in the kitchen available.
Location - walkable from Termini station where train arrives from airport (around 15 minutes), it's near a tram stop which features amazing remains of an ancient roman aqueduct. Nearest Metro is around 10 minute walk away though, as with Rome as a whole it's often easier to just walk into town than use limited public transport. I walked from listing to Colosseum, about 20-25 minutes. (No sign of restaurant/bar options very near listing). Only negative was road noise in the room, but comes with being so central and being able to walk into town. Finally, if there are any other Pokemon Go players on Air B&B, from the Hollywood Room you can access a Pokestop across the street.
Overall, great place with great hosts - would love to stay again!