From "Down and Out in Paris and London" by George Orwell (1933), writing the Paris part:
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(About "Hotel X")
"Roughly speaking, the more one pays for food, the more sweat and spittle one is obliged to eat with it. ... Dirtiness is inherent in hotels and restaurants, because sound food is sacrificed to punctuality and smartness... The only food at the Hotel X which was ever prepared cleanly was the staff's.
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(On the state of the kitchen at the newly opened Auberge):
"Looking round that filthy room, with raw meat lying among the refuse on the floor, and cold, clotted saucepans sprawling everywhere, and the sink blocked and coated with grease, I used to wonder whether there could be a restaurant in the world as bad as ours. But the other three all said they had been in dirtier places."
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