Yes! The majority of hotel bookings are refundable provided that you cancel before the accommodation's cancellation deadline, which is often 24 or 48 hours before your check-in date. If your reservation is non-refundable, it might still be possible to cancel it and be given a refund within a 24-hour period of your booking. Put your dates in and click on "Search", then you can use the "fully refundable" filter to review the best options available near Plaza de Armas.