the apartment that you got

Congratulations, you got a two-room apartment on the outskirts from your grandmother. She mysteriously disappeared, but that's not important. The apartment is a bit gloomy, but spacious for you, and there are some rules. The keys have a matryoshka doll keychain; when you open it, you'll see the rules. Rule one: every Sunday around midnight, a certain man will come to you, introduce himself as a sucker, and ask you for salt. Don't open or answer. Make sure he leaves through the door opposite yours. I remember this apartment is uninhabited. Rule two: if you hear the pantry door opening, immediately turn on the TV at maximum volume and don't take your eyes off it until the pantry door closes. Even if someone enters the room you're in, just wait. Rule three: once a week at 1:33 a.m., you will hear a knock on the window. Don't forget to close the curtains at night. If you hear a knock, immediately run and lock yourself in the bathroom. The knock will stop within seven minutes. Rule number four: If you come home late at night, don't look at the house, watch your step. Rule number five: Keep the closet empty and check it every day at 8 a.m. If you notice a fish set in there, leave the house for half an hour, and if there's a holiday set in there, leave for two hours. Enjoy your housewarming! Live there for at least a week. It's Monday.