Nishiyama Onsen Keiunkan — All-Rooms Free-Flowing Hot Spring

A Guinness World Records-certified historic Japanese ryokan offering natural hot spring water in every room, with one of Japan's foremost hot spring water volumes.

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AI Overview

Nishiyama Onsen Keiunkan is a traditional Japanese inn (ryokan) certified by Guinness World Records as the oldest hotel in the world. It offers free-flowing natural hot spring water in every room and throughout the entire building, boasting one of Japan's largest hot spring water volumes. The inn features couples' plans with complimentary wine and local yuba sashimi, seasonal experiences, and recently completed renovations.

About

Nishiyama Onsen Keiunkan is a historic Japanese ryokan (inn) recognized by Guinness World Records as the world's oldest hotel still in operation. The inn is distinguished by its exceptional hot spring water volume — among the highest in Japan — with free-flowing natural onsen water supplied to every guest room and bath throughout the entire property. Guests can enjoy seasonal offerings such as firefly viewing tours, couples' plans featuring complimentary wine and assorted local yuba (tofu skin) sashimi, and a tranquil retreat from city life. Recent renovations were completed in March 2026.

Highlights

Inn Guide — Keiun no Kachiji (Pathways of Keiun)
Notice: Renovation Completed — March 6, 2026
Happy New Year — January 1, 2026
Notice of Temporary Closure for Renovation Work — October 2, 2025
[Ended ~June 29] Firefly Viewing Night Tour Notice — May 17, 2025
[Couples] Plan (with complimentary wine and assorted local specialty yuba sashimi♪) — Escape the bustle of the city and enjoy a luxurious time together.

FAQ

What makes Nishiyama Onsen Keiunkan unique?

It is certified by Guinness World Records as the oldest hotel in the world and boasts one of Japan's largest hot spring water volumes, with free-flowing natural hot spring water throughout the entire building.

Is hot spring water available in the guest rooms?

Yes. Free-flowing natural hot spring water is supplied to all rooms and throughout the entire building.

Are there special plans for couples?

Yes. A Couples' Plan is available, which includes complimentary wine and an assorted local specialty yuba (tofu skin) sashimi, designed as a luxurious escape from city life.

Was the inn recently renovated?

Yes. Renovation work was completed on March 6, 2026, following a temporary closure that began in October 2025.

Does the inn offer seasonal experiences?

Yes. Seasonal activities such as a Firefly Viewing Night Tour have been offered in the past (the most recent tour ended around June 29, 2025).

How can I make a reservation?

Reservations can be made through the official website at https://www.keiunkan.co.jp/.