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Mamashita Hot Spring

まました温泉

Public Bathhouse
Kanto·Tokyo

Bathing & Water

Natural onsen water

Uses natural hot spring water

Indoor BathYes

Enclosed indoor bathing area

Cold BathYes

Cold water plunge bath, typically used after sauna

Capabilities

Mixed BathingNo

Shared bathing area for all genders

Reviewer describes a men's bath (gender-separated layout); no mixed bathing mentioned anywhere.

Policies & Services

TattooYes

Allows entry with visible tattoos

Unverified

DiningNo

Restaurant or dining open to visitors (not just hotel meal plans)

WashingYes

Shower, wash stations, soap and shampoo provided

Rest AreaYes

Relaxation space for after bathing

About

A small day-use public bath run by Niijima village. Along with an indoor bath, a sauna, and a cold-water bath, there's an open-air bath that looks straight out over the Mamashita coast, and the spring water is said to keep you warm well after you towel off. A separate hot-sand bath, using white sand from Habushiura Beach heated by the spring, is available for an extra fee. There's no restaurant, just vending machines and a few chairs in the lobby, and the crowd here tends to be more local than touristy.

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Last updated August 5, 2026