What appeals most to Passepartout about working for Mr. Fogg?

Passepartout found Fogg's regularity and ordered life appealing.

Passepartout had been a sort of vagrant in his early years, and now yearned for repose; but so far he had failed to find it, though he had already served in ten English houses.

Hearing that Mr. Phileas Fogg was looking for a servant, and that his life was one of unbroken regularity, that he neither travelled nor stayed from home overnight, he felt sure that this would be the place he was after.