Yes, the majority of hotel reservations are fully refundable provided that you cancel before the hotel's cancellation deadline, which is often 24 or 48 hours before your check-in date. If you booked a non-refundable reservation, you may still be able to cancel and be given a refund within 24 hours of your booking. Enter dates in and click on "Search", then you can filter by "fully refundable" to get the best deals available near Keltenschanze.