Yes, most hotel bookings are fully refundable as long as you cancel prior to the hotel's cancellation deadline, which often is within 24-48 hours of your arrival date. If you have a non-refundable reservation, you might still have the option to cancel and get a refund within a 24-hour period of your booking. Plug in your dates, click on "Search", then use the "fully refundable" filter to get the best options available near City Museum of Postal Service.