I Looked Into Fujisan Yogan no Yu Sensui

I've been looking into campgrounds, day-trip hot springs, and lodgings one after another, focusing on whether you can get there without a car and whether indoor-type people can enjoy them.

This time I looked into Fujisan Yogan no Yu Sensui in Fujiyoshida, Yamanashi Prefecture. I'm a paper driver (I have a license but barely drive) and I'm not great at going out, so what caught my interest was that there's a hotel nearby, which makes it look like you could use the place as a little detour.

The Short Version

It has six kinds of baths using Mt. Fuji spring water, and the biggest draw seemed to be that it offers a Himalayan rock salt bath, a microbubble open-air bath, and even a sauna.
As for Rakuten Mobile signal, the overall rating on the official tool was "C", so it might be a good idea to check ahead of time.

I've put the details below.

A Day-Use Bathing Facility with Six Kinds of Baths Made from Mt. Fuji Spring Water

This is a day-use bathing facility in Fujiyoshida, and according to the official website, it uses Mt. Fuji spring water. Apparently you can see Mt. Fuji from the open-air bath.
The bath page listed the following six types.

Microbubble open-air bath (the "Rejuvenation Bath")
Futamata calcium carbonate hot spring
Himalayan rock salt bath
Lukewarm bath
Sauna
Cold plunge bath

I've also put together the basic information as far as I could confirm it on the official website.

Hours (regular): 10:00-23:00, with last entry at 22:30
Hours (morning bath): 6:00-9:00, with last entry at 8:30. It seems the morning bath is closed on Thursdays
Price (regular): 900 yen for junior high school students and older, 600 yen for ages 4 to elementary school, 500 yen for ages 3 and under (tax included)
Price (morning bath): 650 yen for junior high school students and older, 350 yen for elementary school students and younger (tax included)
Multi-ticket book: 9,000 yen for a book of 12 tickets
Rentals: face towel 100 yen, bath towel 200 yen, loungewear 300 yen, toothbrush 50 yen, razor 50 yen
Payment: cash only, and it looks like you buy a ticket from a ticket machine
Parking: apparently there's a dedicated lot with room for about 100 cars. They ask that you don't park in the lot of the neighboring store
Room rental: 11:00-15:00, with an 8-tatami Japanese-style room for 4,200 yen and a 20-tatami one for 8,500 yen. Apparently it may not be available depending on bookings

I couldn't find the regular closing days for normal business hours on the official website. It seems best to check before you go.

Komorin

A morning bath that opens at 6 a.m. sounds great for days when I can actually get up early. The only thing I want to remember is that it's cash only.

What Caught My Eye as an Indoor Person: the Rock Salt Bath, Microbubbles, and the Rest Area

Of all the baths, the one I was most curious about was the Himalayan rock salt bath. Just from the name, it gave me the impression that I could warm up slowly and thoroughly.
The microbubble open-air bath (the "Rejuvenation Bath") seems to be an open-air bath where you can soak while looking at Mt. Fuji.

The Futamata calcium carbonate hot spring was described as using minerals from Futamata ore, which is known as a healing bath for hot spring cures, dissolved into the water.
There's a sauna and a cold plunge bath, plus a milder "lukewarm bath", so it gave me the impression that even people who don't like hot water would find it easy to pick a bath.

Apparently you can spend time in a rest area after bathing. There are no private baths, and it seems the bathing area is shared.
The name includes "Lava Bath", but I couldn't find any mention of lava plates on the bath page of the official website, so I couldn't confirm that. I also couldn't find details like the type of spring water, the source temperature, or whether it's free-flowing.

Getting There and Things to Know Before You Go, from a Paper Driver's Point of View

The access page on the official website has a map, but I couldn't find any written guidance on trains, buses, or shuttle service.
For someone like me who doesn't drive, this is a bit of a sticking point. On the other hand, since there's apparently parking for about 100 cars, it looks easy to use for people who come by car.

Apparently you can stay at the attached business hotel, Resort Inn Fuyo Kawaguchiko IC branch. It's a separate facility, but the location seems easy to think of as a stop for a hotel-stay getaway centered on bathing.
By the way, that hotel's official website says it's "2 minutes by car from Fuji-Q Highland and Kawaguchiko Interchange". That's the hotel's own guidance, so it seems best to keep it separate from the travel time to Sensui itself.

As for things to be aware of before using the facility, the price page said entry is refused to the following people.

People connected to organized crime groups
People with tattoos
People who are heavily intoxicated
People with skin diseases
People who bring in their own food or drinks

Also, apparently there's a discount coupon for residents of Fujiyoshida City and Minamitsuru District. However, it seems it can't be used for the morning bath.

Rakuten Mobile Signal Conditions

I checked the facility's location (the Kamiyoshida area of Fujiyoshida) with the official "my Area Connectivity Simulation", and the overall rating was "C".

The rating wasn't high, so I'm sharing it as it is.
This rating is just a rough guide for the location. As far as I could find, there was no way to tell how well the signal connects inside the building, such as in the baths or the rest area.

I don't think many people use their phones while bathing, but if you want to watch videos in the rest area or look up your route home, it might be reassuring to prepare a little just in case.
If you're curious about signal conditions, you can also check for yourself with Rakuten Mobile's official connectivity simulation tool.

Komorin

The rating was C, so I'm being honest about it here. It seems best to relax in the bath without worrying about signal, and save things like maps ahead of time.

See Rakuten Mobile Details

Wrapping Up

To sum it up again, my impression of Fujisan Yogan no Yu Sensui is that it's a day-use bathing facility with six kinds of baths using Mt. Fuji spring water, including a Himalayan rock salt bath, a microbubble open-air bath, and even a sauna.

With a morning bath, parking for about 100 cars, and a hotel next door where you can stay, there seem to be a lot of ways to use it. On the other hand, it's cash only, and it seems you need to be careful because people with tattoos and others can't use it.
I couldn't confirm how to get there by train or bus on the official website. The Rakuten Mobile signal rating on the official tool was "C", so if you're concerned, it might be reassuring to check with the tool beforehand.

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