PompeiiinPictures

According to Fiorelli, this shop had a staircase, a
latrine and a rear room.
See Pappalardo, U., 2001. La Descrizione di Pompei per Giuseppe Fiorelli (1875).
Napoli:
Massa Editore. (p.92)
According to Eschebach, the stairs to the upper floor were
on the right, the rear room was in the south-west
corner, on the right at the rear.
The down pipe from the latrine on the upper floor was in
the south-east corner, on the left at the rear.
See Eschebach,
L., 1993. Gebäudeverzeichnis und Stadtplan
der antiken Stadt Pompeji. Köln: Böhlau. (p.279)

Photo courtesy
of Michael Binns.