The room was finally transformed into an apartment for the royal household when the Duc de Berry used it as a guard room. In 1714 it became a part of the apartments of the Maréchal de Villars. It was reduced by about a third of its size when it was made into the First Antechamber of the Dauphine.
The main décor is dominated by the crimson colour that decorates walls. Several golden-framed paintings adorns the walls. Two brown and worn wooden chests can be seen on the left wall - these were the travel trunks of none other than Marie Antoinette.