Seikokan is an onsen ryokan in Deyu Onsen, Niigata, Japan. We have been running our business more than 300 years. You will discover a number of traditional Japanese culture here. I'm going to present lots of stories from deyu hot spring. Please visit our website www.seikokan.jp as well. Also please email us for any enquiries: seikokan@seagreen.ocn.ne.jp