Yes, most hotel bookings are fully refundable if cancelled prior to the accommodation's cancellation deadline, which is usually within 24-48 hours of the scheduled arrival. If you have a reservation that's non-refundable, you might be able to still cancel and get a refund within 24 hours of booking. Plug in your dates, click on "Search", then use the filter option "fully refundable" to review the top deals on offer near Mount Aconcagua.