Yes, most hotel 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 scheduled arrival. If your reservation is non-refundable, you might still have the option to cancel and receive a refund within a 24-hour period of booking. Plug in your dates, click on "Search", then you can use the "fully refundable" filter to review the best deals available near Matriz Square.