We stayed in Rome for 4 days and it was a great resting place for us after exploring the city all day! Carmen was very nice and welcoming. The room is totally separate from the other parts o the flat and has its own bathroom, which is great if you want to get away from the busy city of Rome for the night. The aparment itself is located next to the central railway station, from which you can easlily access the greatest sights of Rome via metro or foot. It is a very busy street, and if I had to mention one negativity, it is that there are some not-so-nice folks hanging around there all they, but they haven't bothered us at all.
The room itself looks into a small yard, so it is quiet and it was impaccably clean when we arrived. Highly recommend!