I regularly stay in hotels bike travelling for work. Not through any criminal intent, but more just interest, I have thought about this. I have noticed a slight increase in the number of times I've been asked for evidence of my room number or staying in the hotel when in my leathers, rather than a business suit, but only slight. A few times I have left this in my room, etc. and explained I'd have to go and check; staff have never looked suspicious when I've done this, so you could always use this as your escape method if confronted. NB: I would never condone this. I'd tell the staff if I saw someone doing this and happily assist the hotel in prosecuting them.