"Very nice staff"

"The reservation was cancelled without any notification or prior warning. I arrived at the auto-check-in machine, which informed me that my reservation had been cancelled because I wanted to check in one day later. According to the terms and conditions published on hotels.com, cancelling a reservation is not an explicit consequence of a later check-in. This alone already constitutes a breach of the booking contract. I would also like to point out that I received no notification whatsoever about...