Loved staying here! Pros and cons: The place was quite small but we did not need much room. The most impressive thing about the flat was how nice and clean it was. The wifi did not exist even though we were promised it would work and there is no longer an option for a mobile wifi device as mentioned in previous reviews. The balcony was nice to sit on though there is a frosted bathroom window for another flat actually on it. The walls are very thin so it was good that we wanted to get up early as we had no choice with the neighbours children.
Despite all this the flat and bed was very comfortable and the only thing I really wanted to change is that there is only a net and not a curtain on the door to the balcony so when you are lying in bed there is a clear view of the other balconies unless you pull the outdoor umbrella shades in. Also also the sun wakes you up bright and early which was fine for sightseeing but but not for a lie in!
Perfect location for the Colosseum and metro. Highly advise the segway tours on the corner of the street!