The moment I arrived at this inn and saw the building and the entrance, I instantly knew I had hit the jackpot.There are many old inns with Showa retro vibes, and inns that are artificially decorated with Taisho romantic or Japanese modern themes, but Keizan is a beautiful pure Japanese inn with no additives that gives you a true sense of Japan.Not only the entrance, but also the aged stairs and hallways have an atmosphere that is more appropriately called vintage than old.The guest rooms are clean, yet have a pure Japanese style with a nice touch of age, giving you a natural, authentic Japanese feel.What is noteworthy is that there is an old wooden frame window in front of the guest room, which provides a beautiful view of the mountain stream and the greenery of the trees.The combination of the scenery and the wooden frame window is the perfect combination.Each guest room is equipped with a new washlet toilet, Wi-Fi, a newly renovated washbasin, and a new air conditioner, which is a wonderful combination of comfort while retaining a pure Japanese style. It feels like a room.However, if I were to point out an area for improvement, there is no cooler pot with cold water in the guest room or in the changing room.This time, I knew in advance that there were no vending machines in the hotel, so I bought water at a convenience store near the hot spring town, so it was no problem, but I think it would be better to have water in the room. .As for the baths, the private open-air rock bath has a nice view and is spacious, while the indoor bath has a cool atmosphere and is comfortable and spacious enough for the inn's capacity.The best part is the private open-air bath made of cypress.You'll feel like you're bathing in a hot spring tucked away in the middle of the forest, and you'll be able to immerse yourself in an extraordinary world with the spectacular view and open feeling.The beauty of the rectangular cypress bath itself and its surprisingly small size made me feel that it was a one-of-a-kind open-air bath.Also, because of this location, the only physical way to get to the open-air bath is through the stairs, but on the other hand, I felt that it was because of the stairs that I felt that it was possible to enjoy the romantic atmosphere inside the hotel, so this is unique to this inn. It seems foolish to think that there is no elevator = a negative point.The quality of the hot spring water is sulfate spring, which I personally like, so I expected it to have some effect, but the hot water was better than I expected.Even though I don't feel any irritation, my skin feels moisturized, relieves daily fatigue, and feels extremely toned. As expected, it flows straight from the source. As expected from the phantom hot spring town of Ashinomaki.And the meal.Since it's a small, family-run inn, I expected to be served country mom-style cuisine, but I was surprised to find that they served authentic and delicious homemade Japanese food.The food was probably prepared by someone who had extensive training at a well-known Japanese restaurant, and the work is really good.Some excerpts from the menu include high-quality horse sashimi, chunks of crispy Fukushima beef grilled on a copper plate, perfectly cooked salt-grilled sweetfish, and handmade soba noodles.Even though it's in a standard price range, the menu structure and quality is comparable to that of a luxury inn.Also, the fact that the vegetables and rice are made by the family is truly amazing.Breakfast was delicious Japanese food that felt locally produced and handmade, and the young proprietress was in charge of dinner and breakfast. The hotel's kind yet unpretentious response gave me a sense of the simple and unpretentious nature of the Aizu people, and in a good sense, it felt like a country inn, which was soothing.The buildings, the food, the hot springs, the scenery, the simple people of Aizu...I was impressed by everything.I've been to many ryokan so far, but this one was top class and is a treasure of Japan.I hope this wonderful inn continues to exist for many years to come.