One of my cousins in France gave me a useful tip.

He said that clean toilet facilities are often associated with satisfying restaurants. What he meant was that if the restaurant’s management took care of small details such as the toilets, it was likely that they would take care over the more savoury aspects of the business such as the food and customer care.

Since I was given that tip, I have noticed that there is a remarkably high correlation between my degree of satisfaction with the restaurant and the state of their ‘loos’.