Indeed, although it has been embraced by patrons, the creaky restaurant proved to be a challenge for the city's inspectors. Diners enter through the street-level kitchen to go up to the tiny dining rooms on the second and third floors; a dumbwaiter hums from floor to floor, delivering food.
Sounds like half of the places where we dined in London.
Did you go to Wong Kei (pronounced "wonky")? It has lots of stairs and notoriously rude waitstaff.