Sentō: The ¥600 Bath Your Neighbourhood Actually Uses

Every guide sends you to an onsen. Almost none of them mention the bath that's a four-minute walk from wherever you're staying.

A sentō (銭湯) is a public bathhouse — not a hot spring, not a resort, not an experience someone designed for visitors. It's the bath people use because they live nearby. In Tokyo it costs ¥600 — a price fixed by the metropolitan government rather than by the owner, which tells you most of what you need to know about what kind of institution this is. (It was ¥550 until August 2026, when the city allowed a ¥50 rise because fuel costs had made the old price unworkable. That is roughly how often it moves.)

Walk in on a weekday evening and you'll find four or five people: a man in his eighties who has come here since the 1960s, a construction worker, a father washing a small child's hair, and now you. There is a painted Mount Fuji on the tiled wall. There is a scale, a mirror, and a bottle of milk in the fridge. Nobody is taking photographs, because nobody would think to.

I think it's the single best-value hour in Japan, and it's disappearing.

Sentō vs onsen: the actual difference

They look similar and the etiquette is nearly identical, but they're different things.

An onsen uses natural hot-spring water — mineral water from the ground, legally defined, often the whole reason a town exists. It's a destination. You travel to it, you often stay overnight, and it costs anywhere from ¥800 to several thousand yen.

A sentō uses ordinary heated tap water. It exists because, until surprisingly recently, most Japanese homes didn't have a bath. It's infrastructure, not tourism. It's in a residential backstreet with a tall chimney and a curtain over the door.

That's why the sentō is worth your time in a way a resort onsen sometimes isn't: nothing about it has been arranged for you. You're not a guest at an attraction. You're just someone who came to take a bath, the same as everyone else in the room, and being treated as unremarkable is a rare and quietly wonderful thing when you're travelling.

Why they're vanishing

At their peak around 1968, Japan had roughly 18,000 sentō. Today there are fewer than 4,000 — a fall of about ninety percent. Nearly every home has a bath now, the owners are old, the chimneys need expensive repairs, and heating that much water costs more every year. That August 2026 price rise happened precisely because the old price no longer covered the fuel.

Some are being saved — younger owners are taking over, adding craft beer and saunas and DJ nights, and Tokyo's sentō association has run campaigns specifically to bring international visitors in, with multilingual signage and discounted entry at participating baths. But the plain old ones, the ones with the Fuji painting and the wooden lockers, mostly close quietly when the owner can't manage the boiler any more.

This is the honest case for going: the ones still open need customers, and ¥600 is what it costs to be one.

What to bring

Almost nothing, and you can rent or buy what you forget at the front desk.

• A small towel (about hand-towel size) — this is the one you take into the bath area for washing and modesty. Rentals are usually ¥30–100.
• A larger towel to dry off with afterwards. Some places rent these too.
• ¥1,000 in coins and small notes. Many older sentō are cash only, though newer ones take IC cards.
• Soap and shampoo are provided at some, sold in single sachets for ~¥50 at others.

That's it. Everything else — shampoo, a razor, a bag — is available at the counter.

What actually happens, step by step

1. Shoes off at the entrance. There's a wooden shoe locker just inside. Wooden key, take it with you.

2. Pay at the bandai or front desk. In old sentō the attendant sits on a raised platform between the men's and women's sides. Say the number of people, hand over ¥600. This is also where you rent towels or buy soap.

3. Undress completely in the changing room. Everything in a basket or a locker. Yes, completely — swimsuits are not worn. The rooms are separated by gender; the curtains are marked 男 (men) and 女 (women), and they sometimes swap sides on different days, so read them.

4. Take only the small towel into the bath area.

5. Wash sitting down, at a shower station. Stool, bucket, handheld shower. Wash your entire body and rinse off all the soap before you get anywhere near the bath. This is the rule that actually matters — everyone shares that water, so you get in already clean. Rinse the stool and put it back when you're done.

6. Get in the bath. Slowly. Sentō water often runs hotter than tourists expect — 42–44°C is normal, and there's frequently a second, hotter tub. Ease in. There is no prize for the hot one.

7. Sit, and do nothing. Ten minutes in, out to cool down, back in. That's the whole activity.

8. Dry off in the bath area — or at least wring out the towel — before you walk back into the changing room, so you're not dripping across the floor.

9. Drink something cold. There's a fridge, and the traditional order is coffee milk or fruit milk in a glass bottle, drunk standing up with one hand on your hip. This is a real convention and it is very satisfying.

The rules, condensed

• Wash completely before getting in. The one that genuinely matters.
• Small towel never touches the water. Fold it on your head or rest it on the rim.
• Tie up long hair.
• No swimsuits, no underwear.
• Quiet voices. Conversation is fine; it's not a library. But it's a small tiled room and sound carries.
• No phones, ever, anywhere past the changing room. This one is absolute — it's a room full of naked strangers. Don't even bring it in.
• No swimming, splashing, or ducking under.
• Rinse the stool and bucket and return them for the next person.
• Don't stare. Nobody's looking at you either. That's rather the point.

Tattoos: find the bath that wants you, not the one that doesn't

Let me put this the right way round, because most guides get the emphasis wrong.

The question isn't "will I be allowed in?" It's "which bath should I go to?" There are plenty of sentō where tattoos are completely fine, and the useful skill is finding one — not steeling yourself for a refusal at a bath you picked at random.

Sentō are generally more relaxed than onsen and hotel baths to begin with. They're neighbourhood infrastructure rather than hospitality businesses, and a great many have simply never had a policy at all, because the question never came up.

How to find one:

• Search タトゥーOK 銭湯 or 刺青可 銭湯 plus a city name in Google Maps. Both phrases mean "tattoos allowed."
• Several Japanese-language directories list tattoo-friendly baths by prefecture. Searching the phrases above will surface them.
• Check the shop's own website or its Google listing before you go. Where a bath welcomes tattoos, it usually says so.
• Book a private bath — kashikiri buro (貸切風呂) or kazoku buro (家族風呂), a whole bathroom to yourself for 45 minutes or so. Common at onsen, and the cleanest solution if you'd rather not think about it.
• Waterproof cover stickers work for something small, and are sold in Japan.

And the part worth understanding: the rule was never about you. It dates from an era when visible tattoos in Japan meant organised crime, and it was written to keep those customers out of a family bath. It's fading — younger owners increasingly ignore it, and the associations know perfectly well that a lot of visitors have tattoos. But an old rule takes a long time to leave a building.

So if a place does have a sign, it isn't a judgement on you, and there is no argument to win at the door. Go to one of the many that will be glad you came.

A related note for onsen towns: rules vary enormously between neighbouring baths, so one refusal tells you nothing about the next street. Ask at your accommodation — front desks usually know exactly which local bath is relaxed about it, and asking in advance is far more comfortable than finding out while undressed.

How to find a good one

Search 銭湯 plus your neighbourhood name in Google Maps. That's it — the English word "sento" will show you the famous ones, and the Japanese word will show you the one around the corner.

What to look for:

• A tall brick chimney — the giveaway of an old wood- or oil-fired bath.
• A temple-like roof over the entrance. Tokyo's classic sentō were deliberately built to look like shrines.
• A noren curtain in the doorway with 湯 (yu, hot water) or ゆ on it. That character is the universal sign.
• Opening hours around 15:00 or 16:00 to 23:00, often closed one fixed day a week.

If you want the famous ones, Tokyo's Kōenji, Kita-Senju, Sumida and Meguro areas all have well-loved baths, several restored by younger owners. But the correct move is genuinely just to use the closest one to your hotel.

If you like it, go further

Some sentō have a sauna for a few hundred yen extra, and Japan has developed an intense sauna culture around the cycle of sauna → cold plunge → sitting outside in a chair, which enthusiasts call totonou — roughly, "getting tuned." If you see 사우나 or サウナ on the sign and you have an extra hour, it's worth the surcharge.

And if the bath thing takes hold, that's the doorway into onsen and ryokan, where the same rules apply with better water and a mountain view.

One last thought

Standing in a tiled room at 9pm with four strangers, a painted Mount Fuji, and water hot enough to make your fingers red is not an attraction. Nothing about it is impressive. You will have no photograph of it.

But you'll remember it, because for one hour you weren't a tourist in Japan — you were just a person in a bath, in a neighbourhood, and nobody found that remarkable at all.

That's about as good as travel gets.

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