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Tonosawa · JAPAN

Ichinoyu Honkan

塔ノ沢一の湯本館

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A closer look

Historic four-storey wooden ryokan founded in 1630 beside the Hayakawa valley. Breakfast and dinner are served in the fourth-floor restaurant.

Sources & dates (1)

Official source 1Checked: 2026-09-10

Time to unwind

Onsen & bathing

The Kinsen-no-yu and Megumi-no-yu indoor baths overlook the Hayakawa valley and switch between men and women by time. A marble family bath is free to use: reserve at reception on the day for 15:00–23:00, or use it without a reservation from 05:00–09:00. There is no communal outdoor bath. An outdoor bath in a room is a separate room-category choice.

Sources & dates (1)

Official source 1Checked: 2026-09-20

At the table

Meals & stay plans

The published dinner centres on Yonezawa beef shabu-shabu and simmered golden-eye snapper, with a Japanese breakfast including dried fish. Second-night dinners differ, and some plans add dishes such as a sashimi boat. A vegetable-focused vegetarian menu can be requested when booking; check stock, dairy and other specific restrictions alongside the exact meal plan.

Sources & dates (1)

Official source 1Checked: 2026-09-20

Arriving without a car

Getting there

Compare routes from public transport. Times are approximate and exclude waiting and traffic delays.

Hakone-Yumoto Station · bus

Busabout 5 minTo Kami-Tonosawa bus stop
Walkabout 1 min

Source & current travel informationChecked: 2026-09-20

Walking time does not establish step-free or wheelchair-accessible access.

Address to show your driver〒250-0315 神奈川県足柄下郡箱根町塔ノ沢90

Visit the official website

Sources & dates (1)

Official source 1Checked: 2026-09-10

Before you book

No elevator; the facility guide asks guests to complete check-in by 18:00.

Sources & dates (1)

Official source 1Checked: 2026-09-10

Rates, meals and cancellation terms depend on your chosen plan. Confirm the final conditions on the booking website.

Trindex does not take payments or manage reservations. The booking provider handles confirmation, cancellation and support.

FOR THE JOURNEY

A pass for the journey you choose.

If your plans combine the mountain railway, ropeway and cruise, compare the 2- or 3-day Hakone Freepass with separate tickets. The useful choice depends on how much you plan to travel.

Check your starting station, covered routes and first day of use
Romancecar limited-express tickets cost extra

This Klook offer excludes Japanese passport holders. If it does not apply to you, the operator’s guide below explains other ways to buy.

See pass options on Klook Operator’s coverage & purchase guide

Affiliate link. Trindex may earn a commission on eligible purchases. Check the provider for current prices and conditions.

Ichinoyu HonkanCheck rooms & rates

A LITTLE KNOW-HOW

Make the stay yours.

Which part of Hakone is yours?

River valleys, mountain railways, grasslands or the lake. Choose the base that fits the journey.

Your first ryokan stay

The bath, the bed, the dinner. Find the room that makes your Japan trip feel like yours.

One night in Hakone, at your pace

Three ways to combine the journey, an outing and a proper evening at your ryokan.

Find your room

9 room types

Compare space, sleeping arrangements and private baths. Use the original room name when choosing on the booking website.

Japanese Room · Shared bath and toiletOriginal room name: 和室（禁煙：バス・トイレ無）Up to 3 guestsNo private bathRoom details

An eight-mat tatami room on the second or third floor, with its own washbasin. There is no lift; movement within the building involves stairs.

Listed capacity: Up to 3 guests
Sleeping arrangements: Japanese futons, laid out by guests.
Your room bath: Shared bathing and toilets, with a private washbasin in the room.

View booking optionsOfficial room information

Details are based on published sources; some are inferred and may change. Confirm your room and conditions before booking.

Japanese Room with open-air onsenOriginal room name: 露天風呂付和室（禁煙）Up to 5 guestsPrivate onsenRoom details

A first-floor, 10-mat tatami room facing the Hayakawa River. The hotel warns that it can feel cramped at full capacity. There is no lift; movement within the building involves stairs.

Listed capacity: Up to 5 guests
Sleeping arrangements: Japanese futons, laid out by guests.
Your room bath: Private open-air onsen and washlet toilet. There is no shower: use a scoop to draw bathing water from the tub.

View booking optionsOfficial room information

Details are based on published sources; some are inferred and may change. Confirm your room and conditions before booking.

Japanese Room with semi-open-air view bathOriginal room name: 展望風呂付和室（禁煙）Up to 5 guestsPrivate onsenRoom details

A 10-mat tatami room facing the Hayakawa River on the second or third floor. The hotel warns that it can feel cramped at full capacity. There is no lift; movement within the building involves stairs.

Listed capacity: Up to 5 guests
Sleeping arrangements: Japanese futons, laid out by guests.
Your room bath: Private semi-open-air onsen, an outdoor shower and a washlet toilet.

View booking optionsOfficial room information

Details are based on published sources; some are inferred and may change. Confirm your room and conditions before booking.

Large Japanese Room with indoor onsenOriginal room name: 大型和室（内風呂付）（禁煙）Up to 7 guestsPrivate onsenRoom details

A 14-mat tatami room with a separate 10 m² sitting area on the second or third floor. The 10 m² figure is not the total room area. Seven futons may leave limited space. There is no lift; movement within the building involves stairs.

Listed capacity: Up to 7 guests
Sleeping arrangements: Japanese futons, laid out by guests.
Your room bath: Private indoor onsen with a shower and washlet toilet.

View booking optionsOfficial room information

Details are based on published sources; some are inferred and may change. Confirm your room and conditions before booking.

Medium Japanese Room · Shared bath and toiletOriginal room name: 和室（中）（禁煙：バス・トイレ無）Up to 5 guestsNo private bathRoom details

A third-floor, 10-mat tatami room with its own washbasin. The hotel warns that it can feel cramped at full capacity. There is no lift; movement within the building involves stairs.

Listed capacity: Up to 5 guests
Sleeping arrangements: Japanese futons, laid out by guests.
Your room bath: Shared bathing and toilets, with a private washbasin in the room.

View booking optionsOfficial room information

Details are based on published sources; some are inferred and may change. Confirm your room and conditions before booking.

Small Japanese Room with open-air onsenOriginal room name: 露天風呂付和室（小）（禁煙）Up to 2 guestsPrivate onsenRoom details

A compact, first-floor tatami room facing the Hayakawa River, with eight mats and a listed capacity of two. There is no lift; movement within the building involves stairs.

Listed capacity: Up to 2 guests
Sleeping arrangements: Japanese futons, laid out by guests.
Your room bath: Private open-air onsen and washlet toilet. There is no shower: use a scoop to draw bathing water from the tub.

View booking optionsOfficial room information

Details are based on published sources; some are inferred and may change. Confirm your room and conditions before booking.

Small Japanese Room with semi-open-air view bathOriginal room name: 展望風呂付和室（小）（禁煙）Up to 2 guestsPrivate onsenRoom details

A compact six-mat tatami room facing the Hayakawa River on the second or third floor, with a listed capacity of two. There is no lift; movement within the building involves stairs.

Listed capacity: Up to 2 guests
Sleeping arrangements: Japanese futons, laid out by guests.
Your room bath: Private semi-open-air onsen, an outdoor shower and a washlet toilet.

View booking optionsOfficial room information

Details are based on published sources; some are inferred and may change. Confirm your room and conditions before booking.

Tatami-bed Twin · Shared bath and toiletOriginal room name: 和室ツイン（禁煙：バス・トイレ無）Up to 2 guestsNo private bathRoom details

A third-floor, nine-mat tatami room with two single-size tatami beds and its own washbasin. There is no lift; movement within the building involves stairs.

Listed capacity: Up to 2 guests
Sleeping arrangements: Two single-size tatami beds; conventional Western mattresses are not confirmed.
Your room bath: Shared bathing and toilets, with a private washbasin in the room.

View booking optionsOfficial room information

Details are based on published sources; some are inferred and may change. Confirm your room and conditions before booking.

Windowless Modern Japanese Room · Shared facilitiesOriginal room name: 和モダンルーム（禁煙：バス・トイレ・洗面台無）Up to 2 guestsNo private bathRoom details

An eight-mat room on the third floor, renovated in February 2024. It has no windows or views, and no private bathroom, toilet or washbasin. There is no lift; movement within the building involves stairs.

Listed capacity: Up to 2 guests
Sleeping arrangements: The room page does not specify the number or arrangement of beds and futons.
Your room bath: Shared bathing, toilets and washbasins; the washbasins are in the communal bath area.

View booking optionsOfficial room information

Details are based on published sources; some are inferred and may change. Confirm your room and conditions before booking.