Yes, you'll find most hotel room reservations are refundable if you cancel prior to the accommodation's cancellation deadline, which often is within 24-48 hours of your arrival date. If you booked a non-refundable reservation, it might still be possible to cancel it and receive a refund within 24 hours of your booking. Add your dates and click on "Search", then filter by "fully refundable" to get the best options available near Monument to Peter the Great.