Bishop de Villeneuve wanted an "Italian-style living room" with walls richly adorned with paintings. He sent for designs from Italy as models.

This large room, open on two floors, is surrounded on the upper floor by a balcony for musicians for official receptions.

The paintings of the scenes represented are made with tempera, on plaster of gray green or blue gray shades. All around the room are scenes from the Old Testament, inspired by the Vatican lodges, painted by Raphel's pupils: "the construction of Noah's ark", "the rise in the 'ark', 'the flood', 'the exit of the ark', 'the sacrifice of Noah', then 'the destruction of Sodom and Gomorrah', 'the tower of Babel' and 'Moses and the Burning Bush'. Above the doors are represented the four seasons under the figures of chubby children engaged in agricultural work.

The corbelling of the gallery is occupied, throughout the room, by foliage in grisaille and garlands of flowers and foliage. In medallions, stand out mythical characters evoking the four elements: Vulcan for fire, Neptune for water, Juno for air and Cybele for the earth.

These paintings would be the work of an Italian decorator who was a pupil of Charles Natoire.