I don't know how you have managed to confuse the issue by talking about ruddy toilets. Why would Devon Bob use American English to describe a toilet. No, it's a restroom proper we are talking about. And when you rightly accepted 'rest' was the order of the day you translated -zài Devon de nà yí gè xiū xi shì de Bob as this -

You are "Bob" and take a rest in Devon, or are on holidays there or are on retirement there?

So that was three guesses and not an answer.

在 Devon的那一个休息室的Bob