The apartment on the third floor is characterized by the airy white space between the river and the courtyard, which makes possible the reading of the structure of the ancient house. Only the dark loft stretched between the high walls interrupts this space, passing along one of the two walls of the white vertical space of the staircase that connects the different levels of the triplex. The iron staircase is very light, composed of double Corten sheets, folded and with rubber hidden in the folds, that making the passage silent.