Serena is a very welcoming host, and gave me all the information I needed upon arrival.
The room was lovely, nice and big, very comfortable bed, with a view of the Vatican walls.
One downside was the loud street noise from the busy road which the room I was in looked out on. I struggled to get to sleep most nights, eventually resorting to sleeping with a pillow over my head to block out the noise. I would recommend requesting the room which looks out over the courtyard if you are a light sleeper.
There were lots of options for breakfast and the kitchen was well stocked daily.
The B&B is in an exceptional location for the Vatican Museums and St Peter's Square, and the city's other sites are only a short Metro ride away, with the Ottaviano Metro stop only being a few minutes walk from the B&B.
I did find it a bit strange that halfway through my stay the bathroom I had been advised to use was suddenly reserved solely for another guest, of which I was notified of via a post- it note on the bathroom door, but aside from that I had a lovely stay.