On the tops of the mountains water is scarce with just the occassional spring. So after four days of trekking, descending down to 2300m this hut feels like an oasis, with its snazzy onsite water feature (a natural stream runs by the side of the hut). The experience is made 10 times better by the horrible rarity in Japan of any kind of stream or river that is not covered in concrete. We arrived early enough to go on photo safari. The lighting assistant was in charge of holding and adjusting the vari-ND filter.