The Hospitalia was a two-story building with 10 guest rooms (3-7, 14-18) on the first floor off a long and wide central hallway, at the southern end of which was a hall. Nothing survives of the second floor, which presumably mirrored the layout of the first. It was accessed via a staircase (22). The surviving rooms have three alcoves for three beds; the floors are paved in black and white mosaic with geometric and floral designs. The rooms had frescoes with mythological scenes (S. Aurigemma, Villa Adriana [Rome 1996] 185). There is one large latrine (19) accommodating 15 people in the northwest corner. The structure dates to the first phase (118-125 CE).