The apartment is an incredible find. It is HUGE. The lounge room and main bedroom so spacious which is unexpected considering you are staying in prime time Trevi Fountain. I guess because it is a conversion from the original rooms of the Monastery. You share the (again spacious) stairway with one other apartment so it is unlikely you will be bothered by other residents. We never heard anyone. And the apartment is so quiet considering the area you are staying in. Sleep quality is five star, comfy bed, lovely linen and pillows, good blackout curtains and dead quiet. Everything we needed and when we did need to contact the team re anything instant response and so helpful.
Supermarket 3 mins walk. And masses of cafes, gelato bars, restaurants right out the door. Very touristy around Trevi Fountain/Via Arcione (Gio's flat) so we we generally crossed over Via del Traforo in the evening and cruised around the streets on that side for dinner. Much better value and food. Few minutes walk. We never took a taxi. Walked everywhere.