On the 2nd floor of BIG FUN Heiwajima in Ota City, Natural Hot Spring Heiwajima is open 24 hours a day, and its English site says it is a 15-minute car ride from Haneda Airport. Its salt spring rises at 150 tonnes a day from 2,000 m underground, and there is a hot sauna and a seated stone spa. A stay of up to 7 hours with towels and loungewear costs ¥2,400 on weekdays and ¥2,900 at weekends. Everything below is based on the official website.
LocationHeiwajima 1-chome, Ota City, Tokyo (BIG FUN Heiwajima 2F)Hot springNatural salt spring, 150 tonnes a day from 2,000 m undergroundBathsViewing Spa (carbonated bath, hot spring, seated stone spa) / Shining Spa (hot spring, jet bath, Togor bath, reclining bath, hot sauna)
Introduction
One of Tokyo's larger natural hot springs
The official site says 150 tonnes of water a day rise from 2,000 m below ground, making it one of the larger natural hot springs in Tokyo.
In the Viewing Spa you can watch sports or TV on a big screen while sitting in the carbonated bath or the hot spring.
01 · Hot spring
The natural hot spring
A natural salt spring.
02 · Viewing Spa
Baths with a big screen
A carbonated bath, a hot spring bath and a seated stone spa.
The Viewing SpaThe seated stone spa
03 · Shining Spa
Many kinds of baths
A jet bath, a Togor bath and a reclining bath.
A bubble bathThe jet bath
04 · Sauna
The hot sauna
The hot sauna is in the Shining Spa (cleaned 6:00–9:30).
The hot sauna
What are the Haneda late-night plans?
Plans for spending the night around very early or very late flights at Haneda.
There are three — Late-night Stay, Flight and Welcome — and each costs ¥5,000 for adults.