We had a great week in Karen's apartment. It's perfectly located and looks exactly as in the pictures. For one week walking in Rome we used public transport just once - to Borghese gallery. There are really a lot of bars, restaurants and patiseries up to 10 minutes walking distance and the prices in Trastevere are 10-20 % cheaper than at the other side of the river.
Karen allowed us to drop the suitcases in the apartment before the check-in as our flight arrived early in the morning and to leave the apartment at 12 PM. Unfortunately she was unable to arrange a transfer for us from the airport, but did this for our departure and it was very comfortable.
Karen was very kind and helpful. She was missing during the Easter holidays and allowed us to use her terrace. Unfortunately we didn't advantage due to the rain.