Mariano & Karinè's place is a perfect spot for the Naples visitor: Very well located towards the end of Corso Garibaldi and adjacent to Piazza Carlo III, it is spacious and comfortable with a very personal touch and attention to detail. Mariano provided very accurate directions and great restaurant suggestions ("A Figlia d'o Marino" is particularly nice and close to the apartment, same as "Oliva", a typical and unpretentious Neapolitan pizza place within 3' walk, too).
I can only highly recommend their place to everyone and will of course consider staying here again on another trip to this beautiful part of the world.