We stayed with friends for a week, two families (four adults and four teenagers). We all loved EVERYTHING about the place: large rooms (each with a bathroom), large living room with enough space and seats for everyone. I have intense allergies, and the place was perfectly clean! No carpets, no dust. The mattresses were AMAZING! The furniture was very comfortable and everything was done in a unique style.
The building itself is beautiful, and the neighborhood is charming--as others wrote, it is in a quiet area, yet very close to all major attractions (we walked everywhere, except for Colosseum). Excellent cafe Portofino right across from the front door, open from early am for espresso to late night for a glass of wine with olives. Next door is a small grocery store, then a bunch of clothing boutiques.
Violetta's place is truly a gem, I would love to stay there again.