For foreign tourists visiting Japan, experiencing an onsen (hot spring) or a sento (public bathhouse) is a unique and special activity. These places offer a chance to immerse in Japanese culture while providing the perfect opportunity to relax and unwind. However, Japanese onsen and sento have specific rules and etiquette that may be unfamiliar to first-time visitors. In this article, we will introduce the basics of onsen and sento, how to enjoy them, what to bring, etiquette to follow, and recommendations for easily accessible sento in Tokyo and hot spring destinations near the city. Hopefully, this guide will help you fully enjoy Japan’s bathing culture and create wonderful travel memories.

What is the Difference Between an Onsen and a Sento?
1.What is an Onsen?
An onsen is a natural hot spring that contains specific minerals and elements. Japan has numerous onsen areas, each with unique water properties and health benefits. Besides relaxation, onsen are known for their skincare effects, fatigue recovery, and pain relief. Many onsen resorts and large onsen facilities offer various bathing options such as open-air baths and private baths.
2.What is a Sento?
A sento is a public bathhouse commonly found throughout Japan. Unlike onsen, sento typically use heated tap water rather than natural spring water. However, some sento have started using onsen water. Large-scale facilities known as “super sento” often include saunas, jet baths, and stone spas. In major cities like Tokyo and Osaka, sento provide a convenient place for visitors to relax between sightseeing activities.
How to Enjoy an Onsen or Sento
1.Preparing and What to Bring
To have a smooth experience at an onsen or sento, it’s best to prepare the necessary items in advance. Essential items include a bath towel, a small face towel, a change of underwear, and skincare products. Some facilities offer towel rentals or sales, but bringing your own can save extra costs.
2.Bathing Procedure and Etiquette
Japanese onsen and sento have specific bathing etiquette. Follow these steps to ensure a pleasant experience:
①Undress in the changing room – Place your clothes in a locker or basket and proceed to the bathing area.
②Rinse off before entering the bath – Use a shower or pour water over yourself to cleanse your body before entering the tub.
③Soak in the bath – Relax and enjoy the warm water.
④Wash your body – Use shampoo and body soap to clean yourself thoroughly.
⑤Re-enter the bath – After washing, soak in the bath again to warm up.
⑥Exit and dry off – Towel-dry your body before returning to the changing area and getting dressed.
Also, avoid dipping your towel into the bathwater, as it is considered bad manners.
Important Notes About Tattoos
Many onsen and sento in Japan prohibit visitors with tattoos due to historical associations with organized crime. However, with increasing numbers of foreign tourists, some facilities now allow entry if tattoos are covered with waterproof stickers. Some places also welcome tattooed guests. It’s best to check the official website of a facility beforehand to confirm its policy.
Enjoying Sento in Tokyo
Tokyo has many sento, particularly in older neighborhoods. Areas like Kamata, near Haneda Airport, and Sumida Ward, home to Tokyo Skytree, have historic sento that are worth visiting.
1.“Kuroyu” (Black Hot Spring) in Kamata
Kamata is famous for its “kuroyu” baths, which have dark-colored water rich in organic minerals. These baths are known for their moisturizing and skin-softening effects.
蒲田黒湯温泉ガイド|大田区・蒲田で黒湯温泉を楽しもう(Website in Japanese)
2.Retro Sento in Sumida Ward
Sumida Ward has many traditional sento with a nostalgic Showa-era atmosphere. Visiting a sento after a sightseeing trip to Tokyo Skytree can be a great way to relax.
すみだ銭湯めぐり – すみだの暮らし | 一般社団法人 墨田区観光協会【本物が生きる街 すみだ観光サイト】(Website in Japanese)
Hot Spring Resorts Easily Accessible from Tokyo
1.Atami Onsen (My Recommendation)
My personal recommendation is Atami Onsen. Atami is only about 45 minutes from Tokyo by Shinkansen (bullet train) and offers stunning ocean views. The area around the station has a lively shopping street where visitors can enjoy local specialties such as onsen manju (steamed buns) and fresh seafood.
2.Hakone Onsen
Hakone is another popular hot spring destination near Tokyo. Besides enjoying onsen, visitors can explore museums and take a scenic cruise on Lake Ashi, making it a perfect blend of sightseeing and relaxation.
HAKONE JAPAN | Visit to Experience the Beauty of Japan
Japan’s onsen and sento culture is a wonderful combination of tourism and relaxation. By following proper etiquette, visitors can fully enjoy these bathing experiences and gain a deeper appreciation of Japanese culture. Tokyo’s traditional sento and nearby hot spring resorts offer excellent opportunities to experience this unique aspect of Japan, even for short-term travelers. Be sure to include an onsen or sento visit in your itinerary for a truly memorable trip!
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