We stayed in Daniela's apartment for almost a month. The biggest advantages are it is very clean and well equipped, and the price. The kitchen is very small, but we cooked every day without a problem. The bed in the bedroom is smaller than a double size bed, but we were two and we managed quite well. Another option is to open the sofa in the living room and sleep there.
The internet connection was great, we used it for work, and it was fast and stable.
The downside from our point of view is the location. The neighborhood is nice, many supermarkets and places to eat, and it feels safe. However, it's not close to the city center. It's about 20 minutes walk to the Vatican, and about 40 minutes walk to Piazza Navona. There is no metro near by, and the buses are slow, busy, and not frequent.

The host is very nice and helpful, and answered our e-mails very quickly.