Antonella was very flexible and kind. The apartment was perfect, clean, with all you could need at your hand, even local guides and information. Well located, only at 30 minutes walking to the Colosseo and metro/bus only at 2 minutes. Area plenty of pizzerias, gelaterias and good pastries. In addition, shop areas so close, as Carrefour, Eataly and Toddis.
The only thing I missed (I think is common in Italy not to use this) was a blind courtain to sleep in the main room after the sun rises; if you have problems to sleep with sun light, do not forget a sleep mask with you if you choose this room!
With this personal exception, the apartment is highly recommendable!