Yes, most hotel bookings are refundable provided that you cancel prior to the accommodation's cancellation deadline, which often is within 24-48 hours of your scheduled arrival. If you have a non-refundable reservation, you might be able to cancel it and be given a refund within a 24-hour period of booking. Plug in your dates, click on "Search", then you can filter by "fully refundable" to review the best deals near Agua Milagrosa lagoon (Dolina).