These private rooms of King Alfonso XIII and Queen Victoria Eugenia, in the front of the building, situated on either side of the Throne Room. They were equipped with furniture that still today is kept in the Museu Nacional.

Ten panels of mural painting, the work of Josep Obiols, decorated the left foyer of access to the private rooms of the King and the Queen, on the two sides of the Throne Room. These are marine compositions in which mermaids, mermans and dolphins combine with sea characters. Due to the remodelling of the Palau Nacional, the panels were taken down and these rooms became exhibition rooms on the first floor, either side of the Òleum restaurant.  On the one hand, the Queen's Office currently is the space of the kitchen of the restaurant, and on the other hand, the Cabinet of the King now is access to the Rooftop Viewpoint.