Muzio's apartment was very conveniently located close to the Trevi fountain, which is also within walking distance of most of Rome's other major attractions. We bought a 7 day public transport ticket, but only used it twice in the end.
The apartment is decently sized, the kitchen and bathroom are relatively small, but very functional, with a coffee machine and free tea and coffee pods. The main bedroom is rather large and very nicely furnished, especially a large comfy bed and almost full-wall mirror, which makes the room look even bigger.
The apartment was very clean, and waste bins are conveniently located in the building.
Overall, we enjoyed our stay in this place very much, and it was perfect for two people for a few days.