My stay at Francesca's has been perfect, I feel so lucky to have found it!
Francesca is incredibly sweet and very attentive to communications, and arranging that all elements of your stay go smoothly. On the second day of my stay I managed to break part of the stove by accident and she was so understanding about my clumsiness! Francesca is very kind and generous with information about Rome and surrounding areas, and also quiet and respectful of the personal space of her guests. I've also made friends with her two cute cats. The apartment is bright and cheerful, and the outdoor patio area is perfect for having a sunny breakfast with the plants, or for a glass of wine and a book in the evenings. The bed is very comfortable and there is a ceiling fan which keeps the room cool at night and blocks out any street noise.
The location in central Testaccio is so nice to return to in the evenings, and ideal for walking to the Centro Storico and Trastevere. It's a very hip neighborhood and feels less flooded with tourists, even in the height of the summer season. There are great restaurants, a central market, and shops in Testaccio as well, and a lovely piazza to hang out in. It's also a relatively quick walk to the metro and the FAO building if you happen to be in town for work.
I really couldn't recommend this apartment more, and if I'm ever back in Rome (fingers-crossed), I hope to stay again! Grazie mille, Francesca!