Yes, the majority of hotel room reservations are fully refundable as long as you cancel before the accommodation's cancellation deadline, which is often 24 or 48 hours before the scheduled arrival. If you booked a non-refundable reservation, you may still be able to cancel and get a refund within a 24-hour period of booking. Enter dates in and click on "Search", then use the "fully refundable" filter to review top deals close to Great Wall.