The location was absolutely perfect for us!
I personally think Trastevere is the best location to stay in when visiting Rome. There's lots of restaurants and bars, without being too touristy.
The apartment was spotless, and perfect for 2 or 3 people.
As well as having lots to do on your doorstep, you can walk to all the major landmarks really easily.
Stefano was really helpful throughout our stay, and even booked us transport from the airport when we arrived as there was a public transport strike.