Tokyo Basics

Tokyo Black-Water Sento & Designer Baths for ¥600

Seven Tokyo sento beyond the famous list: rooftop and designer baths near Shibuya, black hot-spring water in Kamata and Musashi-Koyama, plus what to bring and tattoo rules.

By JOHN NANJO 2026.10.24 6 min read

It's 9pm, the office air-con has dried you out, and the shower in your apartment is the size of a phone box. Tokyo's answer costs ¥600. This guide skips the famous baths everyone already lists and goes to two kinds worth learning: renovated "designer" sento on the west side, and the tea-coloured hot spring water that bubbles up under the south and east of the city.

Budget¥600 bath; ¥900–1,150 with sauna (as of Oct 2026)

Time60–90 minutes

Best forWeeknight reset, first sento, rainy Sundays

StartNaka-Meguro Sta., 3 min walk to the first bath

What ¥600 gets you

Tokyo sets one adult price for every neighbourhood bathhouse in the city. Since August 1, 2026 that's ¥600 for anyone 12 and over, ¥200 for elementary school kids and ¥100 for preschoolers (as of Oct 2026). Saunas are the only real extra, and they vary a lot from bath to bath. If you want to keep the whole night under ¥1,000, the two places below that charge ¥300 for the sauna, towels included, are your best bets.

Carry cash. Several of these baths take nothing else, and the ones with ticket machines want coins or small notes.

Designer baths on the west side

These three look more like a boutique hotel than a 1960s bathhouse, and all are an easy ride from Shibuya.

1 Kohmeisen (Naka-Meguro)

¥600 · sauna +¥300 with towels · 15:00–25:00, last entry 24:30, irregular days off · 3 min from Naka-Meguro Sta.

The pick if you only try one. There's a rooftop open-air bath on the third floor where you look straight up at the Tokyo sky, plus a high-concentration carbonated bath. The men's and women's sides swap every Friday, so the rooftop you get depends on the day. Cash only, no IC cards. Tattoos are fine according to the bath's own FAQ. The sauna has a cap on how many people can use it at once, so on weekend nights come early.

Bunka Yokusen (Ikejiri-Ohashi)

¥600 · 14:00–25:00 Mon, Tue, Thu, Fri; 10:00–24:00 Sat–Sun · closed Wed · 5 min from Ikejiri-Ohashi Sta. East Exit

A short hop from Shibuya on the Den-en-toshi Line. Tattoos are accepted, as stated in its FAQ. Two things catch newcomers out: there's no shampoo or soap in the bathing area (you can buy them at the counter), and there's a time limit of two hours, or three if you use the sauna. Cash only. The weekend 10am opening makes it a good Sunday-morning bath before brunch in Sangenjaya.

2 Kairyoyu (Shibuya / Ebisu)

¥600 · sauna extra · 12:00–23:30, last entry 23:00 · closed Sat · about 12 min walk from Shibuya or Ebisu Sta.

Look for the huge whale painted on the outside wall. Inside: soft water, a lukewarm carbonated bath, a cold plunge and a sauna where staff sometimes do aufguss towel-waving sessions. It opens at noon, which makes it the most useful bath here for remote workers and shift workers. Remember it closes on Saturdays, the opposite of most sento.

Black water: real hot springs at sento prices

The south of Tokyo, especially Ota Ward around Kamata, sits on kuroyu: hot spring water stained dark by humic acid from ancient plants buried underground. Ota City describes its version as among the darkest in Tokyo. It feels soft on the skin, and in the darker baths you can't see your own feet.

3 Hasunuma Onsen (Kamata)

¥600 · sauna +¥300 with towels · 15:00–24:00 · closed Tue · 2 min from Hasunuma Sta. (Tokyu Ikegami Line), 10 min from JR Kamata

Every bath here uses natural hot spring water, and even the cold plunge is fed straight from the source. Add a carbonated bath and the ¥300 sauna, and you've got the best-value full session on this list. Rinse-in shampoo and body soap are provided, so you really can arrive with nothing but cash. Tattoos are fine as long as you follow the house manners. If you forgot everything, the ¥200 towel set covers you.

4 Musashi-Koyama Onsen Shimizuyu

¥600 · sauna +¥500 (bath + sauna ¥1,100) · 12:00–24:00, Sun from 8:00 · closed Mon (open on holiday Mondays) · 5 min from Musashi-Koyama Sta. East Exit

Two different springs under one roof. The amber kuroyu comes from 200 m down; the "golden" water comes from 1,500 m, is rich in iodine and sits at a gentle 38°C, so you can stay in for ages. Buy your ticket at the machine by the entrance. Walking directions from the station: left out of the East Exit, right at the dead end, right again at the Gochi crossing.

5 Mikokuyu (Ryogoku / Kinshicho)

¥600 · 15:30–26:00 · closed Mon (open on holidays, closed the next day) · about 16 min walk from JR Kinshicho, or bus to Ishihara 3-chome

Three black-water baths at three temperatures, so you can step up from warm to properly hot. The baths on the fourth and fifth floors are designed differently and swap between men and women weekly. It's open until 2am, which makes it a smart last stop after sumo or a night in Kinshicho. The walk is long, so take the bus in the rain.

Worth the train ride

Hisamatsuyu (Sakuradai, Nerima)

¥600 · sauna +¥550 · 11:00–23:00, last entry 22:30 · closed Tue · 5 min from Sakuradai Sta. (Seibu Ikebukuro Line)

Natural hot spring water from 1,500 m and projection-mapped art on the bathroom walls. It's a few stops out from Ikebukuro and opens at 11am, which makes it a good excuse for a long weekday lunch break. With sauna it lands at ¥1,150, so this is the one place here where you go over budget. The bath alone is still ¥600.

How to do it without looking lost

Shoes first. Put them in a small locker at the entrance and keep the wooden key.
Pay. Either a ticket machine (hand the ticket to the front desk) or pay the person at the counter. Say if you want the sauna; you'll often get a wristband or towel.
Wash, sitting down. Use the stool and shower, wash everything, rinse off the soap. Then get in the bath.
Small towel stays out. Fold it on your head or leave it on the edge, never in the water.
Wipe down before the changing room. A dripping trail across the changing room is the classic first-timer mistake.
No phones, no hair dye. Several baths ban hair dryers you bring yourself and dye shampoo that stains the tiles.

What to bring (and the tattoo question)

Bring: ¥1,000 in coins and small notes, a small towel, a plastic bag for the wet towel. Shampoo is optional at Hasunuma, essential at Bunka Yokusen unless you buy it there.
Tattoos: Kohmeisen, Bunka Yokusen and Hasunuma Onsen all say on their own sites that tattoos are OK. Most neighbourhood sento take the same line because they're public baths, unlike big spa complexes. For the others, ask at the desk before you pay.
Timing: weekend evenings tend to be the busiest. If you want space, go soon after opening on a weekday.

Words that work

サウナ付きでお願いします (sauna-tsuki de onegaishimasu) — With the sauna, please.
タトゥーがあっても大丈夫ですか？ (tatuu ga attemo daijoubu desu ka?) — Is it OK if I have a tattoo?
手ぶらセットはありますか？ (tebura setto wa arimasu ka?) — Do you have a towel and soap set?

A black-water bath in Kamata on a Tuesday night costs less than a convenience-store dinner. Find the one closest to your train line, go every week, and you'll start sleeping better.
— John Nanjo