Yes! The majority of 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 may still be able to cancel and get a refund within a 24-hour period of booking. Put your dates in and click on "Search", then filter by "fully refundable" to get the best deals available near Plaza de Armas.