This is a small building to the south-west of the Great Warehouse (II,IX,7), about which the present author has been not been able to find any literature. Apparently it consisted of three shops entered from Via dei Molini, behind a porticus. In the northern shop a staircase was installed later. To the east is a corridor with a long basin. At the north end is an interesting little room, according to the plan in Scavi di Ostia raised, entered from the east via a few steps and with columns at the east end.