I would highly recommend staying at Giovanni's when visiting Naples. When you first arrive Giovanni greets you with a glass of water and sits down with a map of Naples and goes over all the attractions. Very helpful! He also cooks lunch for the hostel everyday, very good food. I stayed in an 8 bed female dorm, standard hostel set up. Giovanni assures you that your belongings are safe there, I never felt the need to lock anything. Plenty of bathrooms, and a nice balcony to eat and hang wet clothes. I will definitely be staying here again when I re-visit Naples.