Luana was very nice and had even prepared a bottle of water for us. She also gave us information about Bari etc and told us to write her a message if we have any more questions later on. We shared the apartment with two guys who we rarely saw. The room was just as described and very clean. Only the matress was pretty hard and you could feel the bedsprings. But since we only stayed 3 nights it was okay. The apartment is very well located - right by train station. Nevertheless it was not loud.
Overall I would recommend the apartment.