I Looked Into Matsukawaya Nasu Kogen Hotel

So far I've researched not just campgrounds, but also several alternative options for those times when I think 'let's skip camping today and do a hotel staycation instead.' Day-use hot spring facilities are part of that same lineup.

This time I looked into Matsukawaya Nasu Kogen Hotel, located in the Nasu-Yumoto area of Tochigi Prefecture. I came across information saying that even though the name includes 'Hotel,' there apparently are periods when you can't actually stay overnight there, and that detail caught my attention, so I decided to check it out.

The Short Version

It's apparently a day-use-only bathing facility where you can enjoy the Shika-no-yu source, which has a history of over 1,380 years, and the Oku-no-sawa source, both flowing continuously (kake-nagashi style) without heating, dilution, or circulation.
As for Rakuten Mobile signal conditions, the official tool didn't return any judgment at all, so the result was inconclusive.

I've summarized the details below.

What Kind of Place Is Matsukawaya Nasu Kogen Hotel?

It's a facility located in the Nasu-Yumoto hot spring area, and apparently it has been operating as a day-use-only bathing facility since April 2023. The official site clearly states that overnight stays are scheduled to resume around 2027, so for now it seems best to think of this as a place for 'soaking in the bath for the day' rather than 'staying overnight.'

The fact that a place originally operating as a hotel switched over to day-use-only bathing was itself a bit surprising to me as I researched it online. If you're looking for a place assuming you'll stay overnight, it seems wise to check in advance.

Hot Spring Water Flowing Continuously from a Source with 1,380 Years of History

There are apparently two types of source water drawn here: the Shika-no-yu source, a simple acidic sulfur spring (pH around 2.6), and the Oku-no-sawa source, a simple sulfur spring (pH around 4.0). Shika-no-yu is a source with a history of over 1,380 years, and the official site describes the cloudy bathwater drawn from it as filling the largest bathtub in the Nasu-Yumoto area.

Apparently all the baths flow continuously without heating, dilution, or circulation, and no chemicals are added. I also came across an explanation saying that chlorine-based chemicals aren't used because sulfur spring water itself has antibacterial properties, but here I'll just summarize the information as presented on the official site.

For men: the large indoor bath and outdoor bath called 'Nasu-no-yu' (using the Shika-no-yu source)
For women: the large indoor bath and outdoor bath called 'Myoban-no-yu' (using the Oku-no-sawa and Shika-no-yu sources)
Private baths: 'Maru-no-yu' and 'Ichi-no-yu' (using the Oku-no-sawa source, with tubs made of Ashino stone; apparently the water is refilled fresh for each private booking)

There was also a description saying the outdoor bath offers the best scenic view in Nasu-Yumoto, but since I haven't confirmed the actual view myself, if you're curious, it seems worth checking out the photos on the official site as well.

Pricing and Private Baths

Apparently the day-use bathing fees differ between weekdays and Saturdays/holidays/special days.

Weekdays: 1,000 yen for adults, 500 yen for preschool-age children, free for children under 2 (a 1-hour extension is 300 yen for adults and 200 yen for preschool-age children; a 3-hour rest-room plan is 2,500 yen for adults and 2,000 yen for preschool-age children)
Saturdays, holidays, and special days: 1,300 yen for adults, 650 yen for preschool-age children, free for children under 2 (a 1-hour extension is 400 yen for adults and 300 yen for preschool-age children; a 3-hour rest-room plan is 2,800 yen for adults and 2,150 yen for preschool-age children)
Private baths: 'Maru-no-yu' is 3,500 yen per hour, 'Ichi-no-yu' is 4,500 yen per hour (apparently a separate bathing fee is required in addition)
Towels: towels are sold for 300 yen, bath towel rental is 300 yen, or a set of both is 500 yen. Body soap, shampoo, and conditioner are apparently provided.

There was a slight discrepancy of a few minutes in the listed business hours: the top page says '12:00 PM to 9:00 PM (last entry 8:00 PM),' while the hot spring page says '12:00 PM to 8:50 PM (last entry 8:00 PM).' I also found two different patterns for regular closing days—one saying 'Wednesdays and Thursdays' and another saying 'Thursdays only'—so it seems reassuring to check the latest information via the official social media accounts before heading over.

Komorin

I thought it was pretty unusual to see slightly different information across pages even within the same official site. It seems there can also be temporary closures, and apparently you can confirm by phone in advance if you're planning to visit on a specific day, so that seems like the more reliable way to go.

Rakuten Mobile Signal Conditions

I use Rakuten Mobile myself, so I always check a facility's location using the official 'My Area Connectivity Simulation' tool. This time I followed the same process.

As a result, no judgment was displayed at all—instead, a message appeared saying 'Currently undergoing temporary maintenance.' This might be the behavior that occurs when there's no corresponding data for the given address, but in any case, I wasn't able to determine the signal conditions. So I'm summarizing this check's result as 'unknown.' It's neither good nor bad—that's just what came up within what I was able to confirm.

Komorin

This was the first time I'd run into a case where no judgment came up at all, so honestly, it threw me off a bit. If you're planning to use your phone while soaking in the bath, it might be reassuring to double-check for yourself just in case.

See Rakuten Mobile Details

Nearby Places Worth Stopping By

It seems there are several other places worth stopping by in the Nasu-Yumoto area. This is based on what I found through searching, but I'll list a few here.

Tsutsuji Suspension Bridge: introduced as a sightseeing spot near Nasu-Yumoto Onsen
Motoyu Shika-no-yu (a public bathhouse): apparently a public bathhouse with a source of the same name as the one supplying this facility
Sesshoseki: introduced across multiple sites as a classic sightseeing spot in the Nasu-Yumoto area
Nasu Ropeway (Mount Chausu): a ropeway that apparently takes you close to the summit of Mount Chausu
Nasu Heisei-no-Mori: introduced as an area where you can take nature walks

That said, I wasn't able to confirm the exact travel time from the facility to any of these, so if you're actually planning to visit, it seems best to plan using a map app to get a sense of the distances.

Wrapping Up

To sum up, my impression of Matsukawaya Nasu Kogen Hotel is that it's a day-use-only hot spring facility where you can thoroughly enjoy the continuously flowing waters of the Shika-no-yu source, with over 1,380 years of history, and the Oku-no-sawa source. The fact that it currently falls within a period when overnight stays aren't available is a somewhat distinctive point, but it seems like a solid candidate for whenever you want to relax in a bath for the day.

Since there were discrepancies in the listed business hours and regular closing days depending on the page, it seems best to check the official site or social media for the latest information before visiting. As for Rakuten Mobile signal conditions, since no judgment came up this time, if you're concerned about it, it might be reassuring to check using the official tool yourself.

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