We stayed at the Iya Onsen for one night in May. We took a taxi from Oboke Station as our arrival time did not align with the daily hotel shuttle which leaves at 4:10pm. The hotel is set in a remote area and the room had a stunning view of the forested mountains. We especially enjoyed taking a hot spring bath in our private wooden tub on our balcony overlooking the mountains, and the keiseki dinner which was both delicious and interesting.
The hotel has a small gift shop that sells nice products, many made locally in the Iya area.
The cable car down to the river where the public hot spring baths are located was fun, but we were not as impressed with the baths compared to other onsen hotels we stayed at.
We scheduled a private yoga class with Aki at Yama Yoga which was absolutely fantastic. She and her husband are both very knowledgeable about the area and meeting them was a highlight of our trip.