1. Checking in between midnight and 6 AM and checking out at noon means you are paying for a whole day, which is not cost-effective. However, if you check in after 6 AM, you can stay until the next day at noon, which is a better deal.

2. Hourly rooms cannot be rented for less than 2 hours, as it would not be profitable, and there are no hourly rooms available after 6 PM, to avoid disturbing overnight guests.

3. Couples should avoid staying in rooms with a large bed, as the hygiene conditions are often poor, and the chance of illegal installation of cameras is high.

4. Do not trust the hotel’s 'disinfected' claims too much; small hotels may not have disinfection equipment, and even if they do, the cleaning staff might not bother to use it.

5. Standard rooms usually have at least 4 pillows on the bed, while higher-end hotels provide even more, each serving different purposes.

6. When entering the room, unplug the TV if you are not using it to prevent hidden cameras from recording.

7. If you soil the hotel sheets, you can negotiate the compensation price; hotel sheets are very cheap, so do not compensate according to the hotel's price, generally 30 to 100 yuan is sufficient.

8. Do not call the number on the small card slipped under the door; be cautious of encountering a scam.

9. Do not wear the plastic slippers provided by the hotel, as they can easily spread athlete's foot; disposable slippers can be used instead.

10. Be sure to check if the peephole in the hotel door is damaged; if it is, make sure to request a room change—do not think it’s a hassle.

11. The cloth at the end of the hotel bed is called a 'bed runner' or 'bed flag', which is commonly found in higher-end hotels and serves a decorative purpose.

12. Be cautious when using the hotel’s cups and kettles, especially the kettles, as some people use them for various purposes.

13. Hang a glass cup on the door handle while sleeping at night to prevent someone from sneaking in.

14. Be sure to check the bathroom mirror; if you place your finger on the surface and there is a gap between your finger and the mirror, it indicates a single-sided mirror; if not, it’s a double-sided mirror, which may be problematic.

15. Sleep in clothes, as the sheets are bleached with high concentrations of bleach, which can cause skin itching with prolonged contact.

16. You can tell if the sheets have been washed by looking for creases and smelling them.

17. Check the cap of the bottled mineral water in the room to ensure it is tightly sealed; if it is loose, do not drink it.

18. The area under the bed is actually quite dirty and can easily harbor small bugs, so do not leave your luggage open on the floor, and the same goes for your suitcase; it can attract small insects.

19. Disposable items from the hotel can be taken away; your room fee has already covered them.

20. It is best to run the bathroom hairdryer at high temperature for a while before use, as the high humidity in the bathroom can easily breed bacteria.

21. Do not open the door if someone knocks in the middle of the night; it could be a drunk person or someone with ill intentions, be cautious to avoid danger.

23. Avoid staying in the last room of the hotel.

24. Avoid staying in the first room of the hotel; it is prone to foot traffic, which can disrupt sleep.

25. Do not be swayed by the sweet talk of customer service personnel to get a membership card; it is actually useless and just increases their commission.

26. Hotel toilets are often not cleaned properly, so it’s best to bring a disposable seat cover, or place a few pieces of paper on the seat to prevent skin contact.

27. Pay attention to the hotel’s peephole; when entering the room, use a tissue to cover the peephole, then remove it when checking out.

28. It is best to bring your own toiletries when staying in hotels, as the disposable products are often very cheap. The toothbrush may cause gum bleeding, the shampoo can damage the scalp, and the body wash may cause itching; it’s better to use your own items.

29. If you lose your room card, go to the front desk immediately to report it and get a replacement, ensuring the original card is disabled to prevent anyone from entering.

30. Be cautious when checking hidden corners of the hotel, especially items facing the bed, to see if there are any pinhole cameras installed, and protect your personal privacy.