Yes, you'll find most hotel room reservations are fully refundable if cancelled prior to the hotel's cancellation deadline, which is often 24 or 48 hours before check in. If you have a reservation that's non-refundable, you might be able to still cancel and get a refund within 24 hours of your booking. Add your dates and click on "Search", then you can use the "fully refundable" filter to get the best options available near Lights of Moscow Museum.