My wife and I enjoyed our stay at Alice's flat. It really is in a great location that is not touristy but very close to most of the main sights. We found the walks to Piazza Navona, Colosseum, Trevi, Spanish steps all pretty easy. Loved all the great restaurants right outside our door! Very interesting roman ruins also right nearby such as the Portico d'Ottavia.
Things to note about the apartment: it is on the first floor so there are some steps and no lift. The steps being very old worn marble are somewhat irregular which could be difficult for some. The entrance to the apartment door is a bit difficult with medium to large suitcases. The same is true of the stairs leading to the main double bed above the living space. Just walking up and down to the bed can be a challenge as the steps on the turn are quite narrow. We also found the double bed to be extra hard firmness so sleeping was not great for us. The shower was larger than most and worked great. We didn't really use the kitchen but it seemed quite adequate. We were concerned about the warm temperatures while we were in Rome (85-90F) and no A/C but the apartment stayed fairly cool. We kept the window shutters closed during the day then opened them at night, as a result we did sometime hear noise from people coming and going. There were two standup fans to use. Both windows overlook the inner courtyard which is the entrance for the building. You cannot see the street from the windows. All other features o the apartment worked fine and we felt very safe in the unit and in the neighborhood as well.