Vincenzo’s place is conveniently a 15 minute walk to the Colosseum and a bit further but still plenty walkable from the other major Rome sights. The area is not crazy full of tourists and not too noisy at night. It is also accessible by many bus lines and under 10 minutes from Roma termini.
The room itself is narrow, with a small wardrobe, desk, bed, and nightstand all fitting right up against one another. That said, I spent several days in the room and did not feel cramped. The adjacent private bathroom is spacious and clean. It is no frills, but expected for the price.
Vincenzo himself is very friendly and pleasant. His family lives in a separate half of the apartment, so you don’t see them much. You do hear a bit of them, but it wasn’t anything too bothersome. He was flexible with my slightly delayed arrival and allowed me to keep my bags there for the whole day.