Marco's sister Alice let us arrive late in the evening to check in, and waited for us. The apartment is in the perfect neighborhood, very close to every part of Rome you'd want to walk to. We only used transport once during our stay, to get to the Vatican. The apartment is a work of art. It can be a bit damp because it is a basement apartment, but just run the provided dehumidifier and keep the closet open and everything will be great.