The room, for public use, located outside the porticoed courtyard with access from the Aedicula of Venus, is placed at a lower level than the floor of the courtyard. The latrine is preceded by a small entrance antechamber, easily accessible from the thermal baths area, used by its visitors, who would enter without entering the actual domus.
The latrine is formed of a semicircular room, partially covered by a portico with terracotta columns. The bases of the columns are still visible.
The drainage ditch is located underneath the floor, corresponding to the seats. Cleaning was ensured by a duct, in which water from upstream flowed through the entire villa, with the channels built under the flooring. The channels, which have now been cleared, are in working order and water can still be seen flowing.