The apartment is very well located in Trastevere, accessible by the Mastai light rail station, and close to restaurants and bars. The space itself is big and was very clean. If you plan on cooking, the kitchen has everything that you need.
The Chiesa di San Francesco a Ripa Grande is just a 5-minute walk and houses an amazing Bernini sculpture -- worth the quick trip to see it.
The area around the apartment and Piazza is very noisy at night, so be prepared to hear the people who are out. It didn't bother me so much, but maybe not a great choice for those wanting a quiet place to sleep at night.
All in all, a great stay, and highly recommended.