The host Emanuela was very kind and helpful with information before our arrival.
We stayed in the apartment at the end of March.

A few informative notes that might be helpful for others:
1) In the apartment there was no mobile network, however Internet connection was perfect.
2) It was raining and pretty cold outside when we arrived, and therefore apartment seemed cold as well. But there were 3 electric heaters, and the rooms got warm pretty fast. A couple of times when we switched on too much electrical devices the electricity went off, but we switched back easily and there were no problems.
3) Even though the Trevi fountain was just around the corner, the street of the flat was small and quiet, and we had no problems with noise that you could expect in such a touristic place.
The main comment - Great value for money :)