Yes, most hotel bookings are refundable if you cancel before the hotel’s cancellation deadline, which in most cases is within 24 or 48 hours of your scheduled arrival. If you have a reservation that's non-refundable, it may still be possible to cancel it and receive a refund within 24 hours of booking. Plug in your dates, click on "Search", then filter by "fully refundable" to get the top deals on offer in Downtown Shanghai.