Complex sentence: Later that night, he is awoken by scratching noises and somebody trying to enter his hotel room, but the following morning he is told that he was actually alone in the hotel all night with no other guests or even staff present.
Split into simpler sentences: Later that night, he is awakened by scratching noises like somebody trying to enter his hotel room. The following morning, he is told that he was alone in the hotel all night with no other guests or staff present.