This flat doesn't look as fun as shown in the pictures, everything is a lot more tired-looking, darker and older, actually it was quite scary when we first time got there. There is very little natural light as only one small window in the apartment and it is partially blocked by one of the loud AC units. The bathroom, as other posters have noted, it's small and it smells, a very old toilet that broke while we were there (the owner did send someone to fix it the same day however). The shower is a corner in the wall with two doors that surround you to keep the water from spraying all over the rest of the bathroom, making it very hard to shower.
However, the location of this apartment is unbeatable. It is in the middle of the city and close to everything that an average tourist would like to see in Rome. It’s a great apartment for people who would like to explore Rome on foot and don't care about the living atmosphere. We often would explore one direction and drop off stuff in the apartment as we passed it going to another part of Rome, it made things easy and convenient.