Where can I get a one-day refund for a hotel that has been booked continuously?

Yes, you can. If you buy it for two nights, it is not easy to return it online. You can go directly to the front desk of the hotel to negotiate with the front desk and tell him that you have only booked one night, and then you can cancel another night, but don't wait for the time to pass. In this case, you can't return it. You must be one or two days in advance, so as not to affect the other party's secondary sales.