Diego's flat is nicely furnished, at the heart of Roma Norte, a nice neighborhood with plenty of restaurants and cafes. wee bit on the small size, but charming and comfortable nevertheless. Diego is very nice, his communication quite fast, and he is easy to deal with.
The one major major problem with the place is the noise from the street. Even a heavy sleeper like me was disturbed by it, and during the day when I stayed in and needed to talk to people on the phone, the noise was unbearable. If you can take that, then this is a great place.