I’ve taken bikes into countless hotels while racing, not all of them clean (the bikes that is!), and no one’s ever batted an eyelid. Go to a Travelodge the night before a major race, there’ll be 50 bikes being wheeled into rooms.
Why would the staff dispute you taking it in, they don’t care!
Of course there’ll be stories of people getting away with it, but it’s daft IMO! Last year at the Margam Park NPS we stayed at the Days Inn at nearby Sarn Park services, some fellow left his Top Fuel 9.8 locked to the roof of his car all night, it was still there in the morning. Meanwhile, 10 miles away at the race, tea leaves cut through the side of a van and broke into cars and tents to steal bikes, there’s only so much you can do!