I really enjoyed my few days in Nancy's lovely appartment. The room is light and airy, very quiet (especially for such a central location), has tons of cupboard space and a comfortable wide single bed with choice of pillows. I was welcome to use the kitchen, and Nancy was very friendly when we chatted about my plans.
It's 5 mins from Termini station, and the metro stop Vittorio Emmanuele is just around the corner - great for a direct ride to St Peters/Vatican/Piazza del Popolo in 10 mins or less.
I can definitely recommend the room, and will be visiting again!