Where to stay
The hot springs attached to the places in these guides — and, for each one, what is actually bookable in English.
Every list here was checked by hand against Rakuten Travel's English site. That is not the same as what exists: plenty of inns take bookings only in Japanese, or only by telephone, and a guide that lists them without saying so is wasting your evening. Where the inn that matters most is not bookable, the page says so and tells you what to do instead.
What booking actually looks like
Every inn on these pages links straight to its own page on Rakuten Travel, with your dates already filled in — you should not have to find the name again in a list. This is the screen those links lead to. Ikaho is shown; the layout is the same everywhere.

Three things worth knowing before you click. The rate shown is per room for two people, not per person, which is the opposite of how ryokan rates are usually quoted in Japanese. Changing the dates changes both the price and which inns appear at all — the list is availability, not a directory. And many rates include dinner and breakfast, so a figure that looks high against a city hotel is often covering two meals as well.
-
Aizu-Wakamatsu
会津若松
Two hot spring villages in the hills behind a castle town, and business hotels in the town. Which you want depends on whether you came for the bath or the war.
-
Akiu Onsen
秋保温泉
The Sendai lords bathed here, and the inn that served them is still taking bookings. Eight properties available in English, half an hour from Sendai.
-
Ikaho Onsen
伊香保温泉
Twenty inns bookable in English, a stone stairway town in the Gunma hills, and the natural place to end a day at the Oguri sites. What to know before booking.
-
Shimobe Onsen
下部温泉
The spring Takeda Shingen put under a retainer's care, with the order still held at the inn. Three inns bookable in English, and the best one is not among them.