Probably this used to be a very nice two room apartment. The host/former owner has transformed the two rooms, the kitchen and the bathroom in four rooms and the common corridor/hall serves now as kitchen. Each of the four new rooms is designed to be most welcoming and has a private bathroom. Nevertheless, if you have the luck to get the former kitchen or former bathroom, it may seem a little bit to small. Dario said that the rooms are similar as size, but this is really not the case.
Don't try to see the Colosseum from the room! You may find it very difficult or even dangerous.
However, the block of flats has a top terrace, with two chairs, but you can have your own little breakfast there with an exquisite view.