This cheeky sandwich shop called The Attendant was formally used as a bathroom. It figuratively defies the old saying, "Don't sh*t where you eat." The meaning of the saying may be intended for a different purpose, but it still applies in this instance.
The restaurant still possesses the vintage 19th century urinals -- essentially this restaurant gives one the ability to sit where 19th century Englishmen went pee. The sandwich shop has been through extensive sanitary measures in order to ensure it is hygienic enough to serve food. That being said, it would be no surprise if one were a little hesitant to feel comfortable about eating there. As clean as the place may be, it will always carry that washroom atmosphere.