Salvatore is super friendly. He always responds very quickly. The day of checkout, you can leave some of your luggage in the common room if you want. We were allowed to keep using the room the day of checkout and this was very welcome in 35 degree weather.
There is an air conditioning, which is great! The street is very quiet, so you won't be bothered by traffic like in other parts of Rome.
The reason I give 4 stars is because the bathroom wasn't cleaned and the shower didn't always have warm water...