Yes, the majority of hotel room reservations are refundable provided that you cancel before the hotel's cancellation deadline, which is usually within 24-48 hours of the scheduled arrival. If you booked a non-refundable reservation, it may still be possible to cancel it and be given a refund within a 24-hour period of booking. Enter dates in and click on "Search", then use the "fully refundable" filter to get the best options available near Fresenius Medical Care at Oklahoma State University Med Ctr.