Charmaine here….I just want to (quickly) share the news of a special discount campaign by booking.com. Im afraid I havent yet been able to find details in English though. It starts July 19th,and offers substantial discounts on bookings made in Kyushu from overseas:
http://kurokawa-onsen.com/special-discounts-on-booking-com-for-2016-julyaugsept-kyushu-bookings/