We didn't meet Margherita, but the man that was in charge of the hostel was nice and gave us all the advice he could to ensure a safe and pleasant stay in Napoli. The hostel looks nicer in pictures and even though the area is ok during the day, it doesn't feel quite safe at night. It was a bit hard to find the hostel at the beginning because even though there is a post with a sign, the street is not well iluminated so it's not that easy to spot. The area is really noisy at night so it was hard to sleep. On the plus side, it is super close from the train station, the airport bus and the marina to take ferries to Capri and other islands.