I Looked Into Nasu Onsen Daimaru Onsen Ryokan

Not just campgrounds — on days when I decide "let's skip camping and do a hokans (hotel + vacance) instead," I've been gradually looking into detour candidates as a kind of series on this blog.

This time I looked into "Nasu Onsen Daimaru Onsen Ryokan," located in Nasu Town, Tochigi Prefecture. I was drawn in by the appeal of a "beautiful skin bath" made by blending five different hot spring sources, along with the deep history of its water having been piped to the Nasu Imperial Villa — this inn had naturally risen in priority for me.

What Kind of Inn Is Nasu Onsen Daimaru Onsen Ryokan?

This is a standalone inn located in the Nasu Onsen area of Nasu Town, Nasu District, Tochigi Prefecture. On the official website, I also saw it referred to as "Oku-Nasu Onsen Daimaru Onsen Ryokan." It seems that in the past it was sometimes introduced under a slightly different name as well, so while the naming varies a bit, apparently it all refers to the same inn.

Its biggest feature is a hot spring made by blending five sources — Sakura no Yu, Naka no Yu, Kawa no Yu, Ai no Yu, and Oku no Sawa fumarole spring — and it's promoted as a "beautiful skin bath" rich in metasilicic acid. On top of that, this spring water apparently has a history of being piped to the Nasu Imperial Villa, which left me with the impression of a hot spring area with real heritage. It's also a member inn of the "Association for the Preservation of Japan's Hidden Hot Springs," apparently.

As for access, the official website describes a route of about 1 hour 10 minutes by bullet train from Tokyo Station to Nasu-Shiobara Station, followed by about a 40-minute taxi ride. By car, it's said to be about 30 minutes from the Nasu Interchange on the Tohoku Expressway, though snow tires or chains apparently become necessary in winter. For guests, there's also a reservation-based shuttle bus called the "One-Coin Bus." As someone who barely drives, the bullet train plus taxi route feels like the more realistic option for me.

Regarding room rates, the official booking system only displays prices once you enter dates and number of guests, so I wasn't able to confirm specific figures. General searches turned up information suggesting rates starting in the low 40,000 yen range (tax included) per night for two people, but I'll leave that as unconfirmed information. Reservations seem to be accepted both through the online form on the official website and by phone.

Komorin

Just knowing that this hot spring water was once piped to the Nasu Imperial Villa makes me feel like I'd be soaking in something special. I've never even been there, but I'm already getting excited just imagining it.

The "Beautiful Skin Bath" from Five Sources and a Rustic Bathing Experience

The bathing facilities at this inn seem quite extensive. Even among the indoor baths alone, there's a women-only bath called "Sakura no Yu" (fed directly from the source), a men-only bath called "Sasa no Yu" (built using Ashino stone from Tochigi Prefecture, with two tubs at different temperatures), and a guest-only private bath called "Oku no Yu." Apparently no reservation is needed for Oku no Yu — you can just use it freely whenever it's available, which is a nice point for an indoor type like me who doesn't like worrying about crowds.

There's also a cluster of outdoor baths called "River Bath," said to be formed by damming up a hot spring stream flowing down from the hill behind the inn. It appears to be made up of the following five baths:

• Shirakaba no Yu: Mixed-gender bathing (bathing garments provided), reportedly the largest outdoor bath on the property
• Ajisai no Yu: Mixed-gender bathing (bathing garments provided), a small bath connecting other baths
• Azami no Yu: Mixed-gender bathing (bathing garments provided), reportedly the deepest bath in the mixed-gender area
• Yamayuri no Yu: Women only, located at the uppermost point of the spring stream
• Shakunage no Yu: Women only

The inn seems to place great value on its mixed-gender bathing style, which has continued since its founding, but bathing garments are provided, which gives the impression that first-time visitors are also thoughtfully accommodated. It appears day-trip bathing is also accepted, with a reception window from 11:30 AM to 2:30 PM, priced at 1,300 yen for adults, including a face towel and bathing garment. That said, guests with tattoos are not permitted to use the baths, and photography is prohibited, so that's worth keeping in mind. I couldn't find clear information in the official website's text about winter closures of certain outdoor baths or detailed usage hours for each bath, so those details remain unclear.

As for benefits, the springs are said to help with fatigue recovery, rheumatism, neuralgia, poor circulation, and skin beauty, and drinking the spring water is also said to help with stomach and intestinal ailments — there's apparently even a drinking fountain on the premises. Being able to experience the hot spring water itself might be something unique to this inn.

Relaxing Guest Rooms and Tochigi Black Wagyu Cuisine

Guest rooms range from a special room with a private cypress bath, to a two-room Japanese-Western style suite, standard Japanese-style rooms, and a double bedroom with a shower booth — around nine room types in total, it seems. Among these, the "two-room Japanese-Western suite" is explicitly noted on the official website as being wheelchair-accessible up to the bed, which gave me the impression that it's one of the rooms designed with accessibility in mind. There also appears to be a main-building room limited to just one party per day, which seems well suited for anniversary stays.

As for meals, Tochigi black wagyu is apparently the specialty, and under the concept of "seasonal colors, seasonal flavors," the menu is said to change monthly using seasonal ingredients sourced from the Nasu area. There are multiple dining areas, and all of them are reportedly non-smoking. The entire building is also smoke-free, with four designated smoking areas, according to the information provided — a point that might help you picture what your stay would be like. There's also mention of being able to enjoy shochu mixed with hot spring water, which might interest anyone who enjoys a drink.

The lobby apparently has a corner displaying items related to General Nogi Maresuke, giving the impression of an inn where you can experience history as well as hot springs.

Rakuten Mobile Signal Conditions

I checked the location of this inn using the official "my Area Connectivity Simulation" tool, but no result came up — instead I just got a message saying "currently undergoing temporary maintenance." It seems this kind of display can appear when data for the target area simply isn't available, but regardless of the reason, the honest answer this time is that I wasn't able to determine the signal conditions.

Given that this is a hot spring area nestled in the mountains, I imagine quite a few people are concerned about connectivity. Since it seems possible for the check to simply not return a result, as happened here, it might be a good idea to run the official tool yourself if you're considering staying here, just to be safe.

Komorin

When a maintenance notice pops up instead of an actual result, it leaves me going "hmm, well..." too. But I'll be upfront about it — "unable to determine" is a result in itself.

Wrapping Up

To sum it all up again, my impression of Nasu Onsen Daimaru Onsen Ryokan was of a hidden hot spring inn combining history and character, where you can thoroughly enjoy a "beautiful skin bath" made from five blended hot spring sources across an indoor bath, private reservable baths, and a rustic cluster of outdoor baths called "River Bath." Beyond the hot springs, it also seems to be an inn with other points of interest, such as its history of having its water piped to the Nasu Imperial Villa and its display corner related to General Nogi Maresuke.

On the other hand, some details remained unclear from the official website, such as room rates, the total number of guest rooms, and the winter closure period for the outdoor baths. As for Rakuten Mobile's signal, the result this time was that it couldn't be determined, so if this has piqued your interest, it's probably worth checking the official website or official tool directly for the latest information on these points.

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Related Links

• Official Site