Yes! The majority of room reservations are refundable provided that you cancel before the accommodation's cancellation deadline, which in most cases is within 24 or 48 hours of your check-in date. If you booked a non-refundable reservation, it might still be possible to cancel it and be given a refund within a 24-hour period of booking. Put your dates in and click on "Search", then you can filter by "fully refundable" to get the best options available near Library of the National Bank of Belgium.