Yes, you'll find most hotel reservations are refundable provided that you cancel prior to the hotel's cancellation deadline, which is usually within 24-48 hours of your arrival date. If you booked a non-refundable reservation, you may still be able to cancel and be given a refund within a 24-hour period of booking. Add your dates and click on "Search", then use the filter option "fully refundable" to review the top deals on offer near El Potosí National Park.