What is the scariest thing that has ever happened to you while staying in a hotel?

When I was 12 years old, I stayed in a hotel once. It was said to be a hotel, but it was actually rented out by locals with extra rooms. It was very cheap. After entering the room, I opened the window and took a look, and found that there was a river behind the house with trees all around. It felt a bit eerie, but I only stayed for one night anyway, so I didn't think much about it. At about 11:30 in the evening, I suddenly heard a rustling sound behind the window. When I concentrated on listening carefully, the sound disappeared again. About three or four minutes later, I heard "plop, plop, plop." "There were several sounds of something falling into the water, and then there was another sound of splashing in the water. I felt very uneasy and wanted to call the boss to ask, but I still held back. Because I was quite superstitious at that time, I was afraid that if I shouted, those things would come out of the window, so I huddled under the quilt, not daring to come out. After a while, the sound finally disappeared, and then he fell asleep. When I woke up the next day, I immediately packed up my things and prepared to leave. When I handed the keys to my boss, he saw that I didn't look good and asked if I hadn't slept well. As soon as I thought that everything was over, and it would be embarrassing if others knew that I was timid, I talked about the sound last night very lightly. As a result, the boss laughed and said that it must be the group of children from the school next door who secretly climbed over the wall to get online. They can also endure hardships. Not to mention such a high wall, they also have to swim to the other side of the river.