The penthouse is very lovely and clean. The view from the balcony is simply charming! And the location is just perfect and it's close to Piazza Navona, the Tiber river, the main street Corso Vittorio Emanuele II, and almost every tourist attraction. Also the women at the reception were very kind to us.
One problem is that the breakfast contains only Jam, butter, sugary snacks, and sweet nectar Juice. Which isn't that bad yet it isn't suitable for people who prefer a healthy and a diverse diet. Another thing is that at one of the rooms the shower is kind of small and not all people would feel comfortable in it (I personally did). If I'm ever going to visit Rome again in the future I'd choose to stay at the B&B penthouse.