Yes, you'll find most hotel reservations are fully refundable provided that 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 might be able to cancel it and be given a refund within 24 hours of your booking. Add your dates and click on "Search", then filter by "fully refundable" to view the best deals available near Castillo del Rey.