Yes, most hotel room reservations are fully refundable provided that you cancel prior to the hotel's cancellation deadline, which in most cases is within 24 or 48 hours of the scheduled arrival. If you have a non-refundable reservation, it might still be possible to cancel it and be given a refund within 24 hours of your booking. Plug in your dates, click on "Search", then you can filter by "fully refundable" to view the best options available near Blue Lagoon National Park.