We had a wonderful stay at Alice's flat. It's on the top floor of an old building, so there's plenty of light, great views, and not too much noise. We traveled with a stroller / buggy, and were able to leave it downstairs without any trouble. The flat itself was very spacious and had plenty of room for our 10-month old daughter to crawl around and explore.
The location is incredible -- literally around the corner from Campo de Fiori, there's lots to see and explore just outside the door. There were great bakeries, pizzerias, and gelaterias that we got to enjoy. We also managed to take advantage of the produce market in Campo de Fiori, which was a nice touch.