Yes, the majority of room reservations 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 booked a non-refundable reservation, it might still be possible to cancel it and receive a refund within 24 hours of booking. Enter dates in and click on "Search", then use the filter option "fully refundable" to view the best deals near Constitutional Court of Russia.