Yes, you'll find most hotel bookings are fully refundable if you cancel before the accommodation's cancellation deadline, which often is within 24-48 hours of the scheduled arrival. If you have a non-refundable reservation, you might be able to cancel it and receive a refund within a 24-hour period of booking. Add your dates and click on "Search", then filter by "fully refundable" to view the best deals near g3 - g4 line.