This is a really great place, cannot recommend enough. If you want to explore Rome, you won't find a better location than Antonio & Valentina's place. It is next to basically everything, there are over a dozen restaurants connected to the adjacent piazza, the Vatican and Roman Forum/Colosseum are 15-20 minutes by bus. Trastevere and its restaurants/nightlife is about an 8 minute walk south.
The unit was clean, the bed/sofabed is comfortable, the building seems secure. Valentina was very available for questions. Antonio awaited us for an earlier morning check in and gave us the overview. Shortly after Valentina sent us a great list of recommended restaurants that are more authentic than the places geared for tourists. We tried many of their recommendations and they were *all* fantastic. The unit is a few floors above some late night places, you might hear people at night and the carts in the morning so be aware.