Yes, you'll find most hotel room reservations are fully refundable if cancelled prior to the accommodation's cancellation deadline, which is usually within 24-48 hours of check in. If you have a reservation that's non-refundable, it might still be possible to cancel it 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 review the top deals on offer near Key Observatory.