The apartment was too compartmentalized in the social areas.
There was only one common bathroom, since the other was conditioned to the maid's room, only accessible from the kitchen.
The main idea was to bring together living-room, entrance hall and kitchen in an uninterrupted space, giving access to other compartments through a single indoor hall. The elimination of the maid's room also enabled increasing the kitchen and the reorganization of the bathrooms.
That allowed the creation of a suite freeing the use of the other bathroom by the rest of the apartment.
A set of black lacquered panels transforms the bounce generated by the stairwell into an architectural element, which not only hides the counters as well aggregates the social space of the apartment.