From noisy corridors to thieving toiletries, William Hanson reveals the hotel habits that horrify him most. People often behave differently in hotels than they do at home, and not always for the better. Prominent British etiquette expert William Hanson, who directs The English Manner institute in Central London, puts bad hotel behaviour down to the "commercial" factor. "It's a transactional proposition, so some people wrongly feel they are entitled to behave in a way that they wouldn't at home.