I stayed at Casa Donatello for a month. The flat is located in a nice quiet neighborhood, close to the tram, which comes every few minutes to go into Piazza del Popolo (and the Flaminia metro station). The flat is nice, a good amount of space and has everything you need to live there for a month (or less). Around the flat are a few cafes and restaurants as well, if you just want something close by. Gea was a great host - she was away but arranged for a key pickup from the doorman. All questions through email were promptly answered and she left the flat clean, tidy and welcoming. If you need a flat in Rome, this is a good choice.