From the center of the long corridor, you can access the most imposing room so far revealed in the Villa Romana (Roman villa): a large cruciform room characterized by an apse on the west side and, at opposite corners, by two small rooms of quadrangular shape. The floor of this room is adorned with an extremely elaborate mosaic, with panels circumscribed by marble bands. Despite the obvious damage, the apse has decorations in squares with a knot surrounded by plant motifs. The central space, bordered by a flowering branch that rises from acanthus heads, is divided into two sectors with intertwined squares and circles.

The northern wing, however, has a mosaic with black stars on a white background. The walls partially retain the marble slabs that originally covered the walls, suggesting that the upper part had to be adorned with colored plasters.