Yes, most room reservations are refundable provided that you cancel before the hotel's cancellation deadline, which in most cases is within 24 or 48 hours of the scheduled arrival. If you booked a non-refundable reservation, you might be able to still cancel and be given a refund within a 24-hour period of your booking. Plug in your dates, click on "Search", then you can use the "fully refundable" filter to review top deals close to Natural History Museum.