As other reviewers have said, I Tetti di Roma is nothing fancy, but to me that was one of its selling points. We were looking to stay in a residential neighborhood near central Rome, not a loud touristy area, and this fit the bill perfectly.
My partner and I stayed there for three nights and used it as a base. As others said, you don't go to Rome to sit in a room all day. Our room was clean and bright, with a comfortable bed, a television, and a shared balcony (decorated with beautiful bougainvillea) with a nice view of southwestern Rome, particularly San Giovanni in Laterano. We arranged with the owner, Gianpaolo, to be picked up at the airport by his friend Dario, who patiently waited for us for over an hour while the airline dragged its feet getting our bags off the plane. The fare was the same as taking a taxi would be, but far more enjoyable since Dario is friendly, charming, and loves practicing his English. He recommended places for us to have pizza, gelato, and suppli (rice balls), and he did not disappoint.
The B&B is two blocks from Re di Roma Metro stop on the A line and you can be at Termini in about 10 minutes and Piazza di Spagna in 15. The only drawback is that construction is under way indefinitely on the A line at night and trains stop running at about 10 pm. But on a nice night the walk from central Rome to the B&B takes only about half an hour, and you can always take a taxi. There is a supermarket between the Metro and the B&B, as well as several local bars and cafes around Piazza Re di Roma.
The bathroom is shared but not a problem. It's very clean and the shower is great. You may find the elevator tricky. It's very tiny--not unusual in European buildings--so if you have a lot of luggage it may be slow going. We found it amusing. Your alternative is to walk up 8 flights of stairs, so in this case patience is a good quality to have. You may hear noise from the street, but we sleep with earplugs so it was not an issue.
Two other things that might be of interest to travelers. One is that Gianpaolo gives each guest daily vouchers for a typical Roman breakfast of cornetto and coffee at the local cafe. The cafe is closed on Sundays, so you're on your own, but Gianpaolo will reimburse you for not being able to use the voucher. Since breakfast costs a few meager euro, unless you're on a really tight budget it seems kind of petty to bother. The other thing is that you have to pay the bill in cash, but we knew this ahead of time.
I Tetti di Roma to us was a great aperitivo to the city. We would definitely stay there again.
