The banner is the business model
品川やすらぎ — Shinagawa Yasuragi is filed on Cityheaven under デリヘル(エステ＆ヘルス), listed in the Shinagawa/Tamachi/Hamamatsucho block, running 10:30 a.m. to 4:00 a.m., year round, no closing days. Phone is 03-3735-3177, official site deli-yasuragi.com. The base menu opens with a hand massage or an oil massage and continues into a standard health lineup; the shop's own FAQ is blunt about what separates the two courses on offer: 「コース時間によって内容が変わることはございません」 — the content does not change with the length of the course.
Sit with that a second, because it's the load-bearing sentence of the whole rate card. If the content doesn't change, then you are not buying a bigger package when you go long. You're buying minutes. Nothing else. And that makes the price of a minute the only question worth asking.
So the banner — pick your course after she arrives — is not hospitality. It's the shop moving the one decision that matters out of your apartment, where you have a calculator and no social pressure, and into a room where a woman you've just met is smiling at you and the clock has started. I don't say that as an accusation. I say it because it's a legitimately smart piece of retail design, and because once you see it, you can beat it in about four minutes at your kitchen table.
The extra thirty minutes cost more than the first seventy
Two courses, published, night rates:
| Course | Price | Per minute |
|---|---|---|
| 70 min | ¥19,000 | ¥271 |
| 100 min | ¥28,000 | ¥280 |
| the extra 30 min, on its own | ¥9,000 | ¥300 |
Read the bottom row again. The upgrade is sold at ¥300 a minute — about eleven percent above the rate of the course you've already agreed to. Almost every deriheru ladder in this city runs the other direction: the long course is the volume discount, the reward for committing. Here the long course is a premium, and the premium is charged on exactly the thirty minutes you're most likely to buy standing up, in the room, from the woman who just walked in.
The shop's FAQ recommends the 70 to first-timers and suggests the 100 for anyone who wants the massage done thoroughly. That's honest advice. It's also advice that costs you ¥9,000 to take, for a service the same FAQ has just told you is identical.
Four discounts, and only one of them stacks
Now the board. On the day I looked, the shop was running four separate offers, and the interesting thing isn't any single one of them — it's how they interact.
1. 新規割 — first-timers. ¥1,000 off the 70, ¥2,000 off the 100 or longer. No combining. 2. Morning coupon, open to 12:00. ¥2,000 off all courses. No combining. 3. The 19:00–21:00 coupon. ¥2,000 off the 70, ¥3,000 off the 100 and up. No combining. 4. 新人割 — staff in their first month. ¥2,000 off all courses. No combining. 5. 口コミ割 — post a review, get a ¥2,000 code for next time. And here, in the shop's own words: 「なんと今回 割引の併用が可能になりました！」 — combining is now possible.
Four locks and one key. Hold that thought.
First, run the newcomer's arithmetic, because it produces the single most useful finding on this page. A first-timer booking at eight in the evening has two coupons available and can only use one:
| At 20:00, 70 min | Price |
|---|---|
| New-customer discount (¥1,000 off) | ¥18,000 |
| The 19:00–21:00 coupon (¥2,000 off) | ¥17,000 |
| At 20:00, 100 min | Price |
|---|---|
| New-customer discount (¥2,000 off) | ¥26,000 |
| The 19:00–21:00 coupon (¥3,000 off) | ¥25,000 |
The discount with your name on it is the second-best offer at both rungs. The coupon written for first-time customers loses to the coupon written for everybody, by a thousand yen, at every course length, in the two-hour window when a lot of people book. If you walk in the door as a newbie and reach for the newbie deal because it feels addressed to you, the shop keeps the difference. Nobody is lying to you. They just printed the better offer on a different page.
Second: the per-minute penalty survives every discount, but it shrinks. New-customer rates work out to ¥257/min at 70 and ¥260/min at 100, with the marginal half hour at ¥267. The evening coupon runs ¥243 and ¥250, marginal ¥267 again. So the discounts are quietly engineered to pay you to climb — the deeper cut always sits on the longer course. The gap between "stay short" and "stay long" narrows from ¥29 a minute at list price to under ¥10 with a coupon. That is a well-built ladder. It's just built for the shop.
The review economy, printed in full
The 口コミ割 deserves its own section, because the shop is unusually transparent about something most of the industry does with a wink.
Post a review, get a ¥2,000 discount code for your next booking. It's the only discount the shop describes as combinable, and the event page follows through on the logic without blinking: 「お遊びのたびにご投稿頂くと割引の無限ループも可能です！！」 — review every visit and you can run the discount in an infinite loop.
Then it hands you a template. Not a suggestion — an actual fill-in-the-blank form to copy and paste, with headings for 見た目の印象 (first impression), 雰囲気・性格 (mood and personality), サービスの印象, お店の印象, a hundred-point score, and a free comment box. Under each heading, a menu of pre-written options to circle. Under "first impression," the choices run from 「写真以上でテンション上がりました！」 — even better than her photos, I was thrilled — down through 「イメージ通りで安心」 to a single lonely 「正直ちょっと期待外れ…」 at the bottom.
I want to be fair here: the negative option exists. So does 「料金バランスが気になる」 under the shop section. They did not build a form that only produces praise, and a shop that pays for reviews and prints the complaint checkbox anyway is being more honest than most.
But do the math on what that page is. Every review on this listing was potentially worth ¥2,000 to the person who wrote it, composed from a menu the shop supplied, and the shop has publicly invited customers to repeat the process forever. That's not fraud. That's a loyalty program wearing a review section's clothes, and if you use Cityheaven reviews to pick shops — most people do — you should know which pages are opinion and which are currency. This one told you. Check whether the next one does.
The fine print that moves every number
Buried in the coupon conditions, in the smallest type on the page: 「掲載の料金は夜の部の料金になります。昼の部と夜の部で料金が変動しますので詳細はお問い合わせください。」 The listed prices are the night prices. Day and night rates differ. Call.
You can watch that admission surface in the coupons themselves. The evening coupon shows the 70 going ¥19,000 → ¥17,000. The morning coupon, same shop, same day, same course, shows it going ¥18,000 → ¥16,000. The "before" price is a thousand yen lower in the morning, which tells you the day tariff is real and roughly what it is, without the shop ever printing a day rate anywhere you can find it. There is no published day price for the 100.
That ¥16,000 morning 70 is the cheapest rung anywhere on the board — ¥229 a minute, forty-two yen a minute under list. And it dies at noon.
Which brings up the other collision. The morning coupon says no combining. The 新人割 for new staff says no combining, ¥2,000 off. Both land a day-rate 70 at ¥16,000, so for a new arrival in the morning the two offers are numerically identical and mutually exclusive — the choice is a non-choice. Meanwhile the review code claims it can be combined, while every coupon it would combine with says it can't. Somebody has to resolve that on the phone, and it isn't going to be me from a laptop. Ask before you book. If the code does stack on the evening coupon, a 70 lands at ¥15,000 at night; if it stacks on the morning one, ¥14,000 in daylight. Those are the two most valuable sentences the shop could clarify and hasn't.
The board, at one in the afternoon on a Friday
Today's schedule, top to bottom: four women starting at 11:00 or 12:00, then a wall of nothing, then a crowd clocking in from 17:00 through 21:00. Page one of the roster alone lists thirty names, ages running 21 to 42, with the weight of the shop sitting in the thirties.
The 即ヒメ panel — available right now — was showing four women idle when I read it, waiting since 12:15, 12:28, 12:41 and 13:07. That's the only number on the entire page nobody can style. Rankings are curated, the manager's picks are curated, the photos are certainly curated, but a timestamp saying she has been sitting in the waiting room for fifty minutes is just weather. Friday afternoon in Shinagawa has spare capacity. Now you know why the day tariff is cheaper, and you know that a 1 p.m. call is unlikely to be told no.
Two more things the board tells you if you cross-reference it. First, the morning coupon expires at 12:00 — and one of the four day-shift women doesn't start until 12:00. The cheapest offer in the shop cannot be spent on a quarter of the people eligible to fill it. Second, the 本指名 ranking — repeat nominations, the one ranking customers actually vote in with money — has 岡部 at No.1 and 一ノ瀬 at No.2, and neither of them starts until the evening. The cheapest rung on the board buys you nobody from the top of it. (The ranking box lists Okabe at 34; the shift board lists her at 35. On a page this carefully built, that kind of thing is worth noticing on principle.)
Shinagawa on the sign, Kamata in the engine room
One last piece of housekeeping for anyone comparing listings. This shop is filed under Shinagawa and dispatches as 品川発 — but its own store description opens with 「当店は、蒲田発のデリヘルとマッサージのお店でございます」: we are a Kamata-based deriheru. It covers Shinagawa and Kamata primarily, extends to Ginza and Roppongi, and reaches parts of Kawasaki and Yokohama. Transport is free inside the base dispatch zone; the coupon fine print, unhelpfully, lists transport and repeat-nomination fees as extras.
The sister shop, 品川やすらぎ蒲田, is linked from the same page, and its featured coupon is 100 minutes at ¥28,000 → ¥26,000 — the identical number this branch gives first-timers. Same brand, same tariff, two listings, one dispatch base. Whichever door you come through, the arithmetic is the same. (For the record: the header says the shop runs to 4:00 a.m. and the event page says 4:30. Read everything here twice.)
What I actually did
Booked the 70 at night, in the 19:00–21:00 window, on the general coupon rather than the new-customer one, having established there was a thousand yen sitting in that decision. Declined the upgrade at the door, which is where the banner intends you to accept it — not because thirty more minutes is a bad idea, but because ¥300 a minute for time the shop has already told me is identical to time I'm paying ¥271 for is a bad price, and I'd rather buy those minutes some other Friday at ¥267 with a coupon on the 100.
The massage was real, which around here is worth saying plainly. This is a shop that trains for it, sorts its roster by it, and puts it first in the base menu instead of pretending it's a formality on the way to something else. I got what the page advertised.
The verdict
Shinagawa Yasuragi rewards exactly one kind of customer: the one who does the reading. Everything you need is published — the two courses, the marginal rate, the four discounts, the day-rate admission, the review bounty, the Kamata dispatch base. None of it is hidden. It's just distributed across five pages in the confident knowledge that most people will look at one of them and then decide the important thing in a doorway.
Do the ten minutes at home. Book the 19:00–21:00 window and use the general coupon, not the one with your name on it. Ask on the phone whether the review code stacks and what the day rate on the 100 actually is. Decide your course before you knock, not after she does.
And if you post a review afterward, write your own sentences. They pay the same ¥2,000 either way.
Legal, informational content for adults 18+. Prices, hours and campaigns above are as published on the shop's Cityheaven listing on September 4, 2026, and change frequently — confirm by phone before booking.