I was looking for an onsen to visit for our trip to Japan and ended up in Shima Onsen. Kashiwaya Ryokan will not disappoint you! Staff is friendly, extremely helpful and very kind. Their food is delicious and well presented. Take your time enjoying it. Their open air baths are a delight, relaxing and private. Again, take your time enjoying them.
Leave the large onsen hotels for the masses and go for the traditional smaller ones, like Kashiwaya Ryokan, and enjoy Japanese baths, cuisine and hospitality.