The Ballroom is also called Stuccos Room for its extraordinarily rich decorations that seem to cancel a well-established perception of interiors through the use of non structural elements, such as 17th century relievos of spirals or cherubs.
There are a few paintings on the walls, such as the Shipwreck with the release of a slave, made by the Venetian painter Carlo Saraceni after he came back from Rome. Saraceni was hosted in Venice by Procurator Contarini, who probably deserves credit for commissioning this painting that was finished by Jean Le Clerc, who worked with the master.
The ovals on the walls show Apollo with some allegorical figures carrying different musical instruments, while on the ceiling there is a fresco portraying Virtue driving away Vice; on the sides there are other allegorical representations: War with Mars and Venus, Justice with a sword and a scale, Peace, portrayed as a female figure carrying a cornucopia and an olive branch, and Nobility, depicted as a female figure carrying crowns. The frescoes, despite being repeatedly repainted, can be attributed to Gerolamo Pellegrini for the similarities with the pictures in the room of the musical instruments above, and, as the latter, must also be dated back to the year 1684.
Finally, there is a remarkable fireplace with two reclining figures in the curved tympanum on top, which imitate the figures of Dawn and Twilight made by Michelangelo for the tomb of Lorenzo de' Medici in the new sacristy of Saint Lawrence in Florence.