Yes, you'll find most hotel room reservations are fully refundable if you cancel prior to the hotel's cancellation deadline, which in most cases is within 24 or 48 hours of your check-in date. If you booked a non-refundable reservation, you might be able to still cancel and receive a refund within a 24-hour period of your booking. Add your dates and click on "Search", then use the "fully refundable" filter to get the best options available near Kilometre Zero.