Yes, the majority of hotel room reservations are refundable provided that you cancel before the accommodation's cancellation deadline, which is often 24 or 48 hours before your arrival date. If you booked a non-refundable reservation, you might be able to still cancel and be given a refund within a 24-hour period of your booking. Enter dates in and click on "Search", then use the filter option "fully refundable" to review the best deals near Union Station.