Valentina's place-- besides being charming, comfortable, with a nice little balcony and great amenities-- is also perfect for exploring Roma. While by map, it may look far, in reality it is just the right distance to get away from the crowds and tourism at the end of the day (or night).
Right near the end of the #2 tram, access to Piazza del Popolo is only one quick tram ride away. I also walked it several times, once on the other side of the bridge, visiting The Magick Cafe on the river. And when I left, I was able to get a bus straight to the train station only about 600 metres away.
It was the perfect location and Valentina the perfect host. I would definitely stay here again when I am in Roma.