This place is great value for the amazing location right in the heart of Rome - I really recommend it for this! It's less than 5 mins walk from everywhere, and a much nicer area than Campo de' Fiore and less touristy vibe than further East (near Parthenon, Trevi Fountain - all within 10mins walk).
It is a very buzzy area, so there is noise from the street and restaurants directly below the apartment. However, I didn't mind at all and it was usually quieter by night-time.
The room has been well converted recently, so all fixtures and furniture is new and the bed very comfortable. The common areas and kitchen in the apartment are quite small, but this was OK as you will likely be eating out for all meals.
Daniel is a very responsive host and very considerate.