What does it mean that this hotel requires a credit card guarantee?

These are all credit cards, and the hotel only requires credit card guarantee and authorization. It’s equivalent to you paying a deposit! You need to pay a deposit when you stay in a hotel. If the payment method is not cash but a card, you can use the card you mentioned to use the pre-sale rights as a deposit. When you check out, you cancel the pre-sale right and pay by credit card according to the actual consumption amount

. I don’t know if you understand this explanation. If not, go to the hotel and ask the receptionist

and they will explain it to you in detail!