I've stayed for a month, so Daniela's place was my cozy temporary home. Daniela made an extra effort to make sure I had everything I needed and was always available if there were any problems or requests from my side.
The apartment is in a basement but it has access to a courtyard, where you can sit and enjoy some sun.
The location depends on the needs of course, but the area is very nice, with shops, restaurants and good gelato shops. It's well connected with the rest of the city via tram and nearby train station (10 min walk to Trastevere train station).