Built in the Moorish manner, the vaulting began at the height of a man's head, springing upward in bold and graceful curves to a great height.

The room was square and very large, and the wall below the vault was hung with very beautiful tapestries representing the battle of Pavia, the surrender of Francis the First, and a sort of apotheosis of the Emperor Charles, the father of Don John.
There were two tall windows, which were quite covered by curtains of a dark brocade, in which the coats of Spain and the Empire were woven in colours at regular intervals; and opposite them, with the head to the wall, stood a vast curtained bedstead with carved posts twice a man's height.

The vaulting had been cut on that side, in order that the foot of the bed might stand back against the wall.

The canopy had coats of arms at the four corners, and the curtains were of dark green corded silk, heavily embroidered with gold thread in the beautiful scrolls and arabesques of the period of the Renascence.

A carved table, dark and polished, stood half way between the foot of the bedstead and the space between the windows, where a magnificent kneeling-stool with red velvet cushions was placed under a large crucifix.