We couldn't be more satisfied with Sabrina's place, is literally close to everything but in a quiet picturesque alley in historic center area.
The place have really everything you need. We visit in December (mid 50 F / 8-10 C) and the heating was a great feature, also has hot water (leave the boiler on all the time) and well equipped kitchen.
The bed was very very comfy. The place has even a washer and dryer that after 6 days is a must! The apartment was clean and bright, and Sabrina showed us everything around and keep in constant communication to our needs.
Very glad to have picked Sabrina's place, made our Roman vacations the most lovely and I highly HIGHLY recommend it!