In the hotel, all kinds of food, computers, etc. They were all put in it casually, and when I came back, I found that someone had come in to clean it. Is this safe? Are all hotels like this?

First of all, you should choose a regular, slightly larger hotel with a camera in the corridor. There should be no problem with all kinds of food and computers in the room, but money and valuables are not recommended. It is safest to carry them with you. Even if no one is found cleaning, the hotel has several spare keys. Do you know that it is necessary to prevent people?