Yes, you'll find most hotel room reservations are refundable provided that you cancel prior to the hotel's cancellation deadline, which is often 24 or 48 hours before your 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 your booking. Add your dates and click on "Search", then filter by "fully refundable" to view the best options available near Lake Baikal.