Yes, most hotel bookings are refundable if you cancel before the hotel's cancellation deadline, which in most cases is within 24 or 48 hours of check in. If you have a reservation that's non-refundable, it might still be possible to cancel it and receive a refund within 24 hours of booking. Plug in your dates, click on "Search", then use the filter option "fully refundable" to get the best options available near Nizhny Novgorod Exotarium.