Summer is Calling: Discover Atagawa YOU-YU Beach

As the temperatures rise, there’s no better place to be than the shores of the Izu Peninsula. For those staying at Yubana Mankai, the ocean is practically your front yard. Located just a 1-minute walk from our entrance, Atagawa YOU-YU Beach is a hidden gem waiting to be explored.
🏖️ 2026 Beach Season Information
- Period: July 18 (Sat) – August 23 (Sun), 2026
- Location: Atagawa YOU-YU Beach (Eastern Izu)
- Water Quality: Rank AA (The highest rating by the Ministry of the Environment)
Why Atagawa YOU-YU Beach is Special
The Only Sandy Beach in Eastern Izu
While much of the Eastern Izu coastline (from Okawa to Inatori) is characterized by dramatic rocky shores, Atagawa is home to a genuinely rare sandy beach. It’s the perfect spot for those who want to feel the sand between their toes and enjoy a classic beach day.
Pristine “AA” Water Quality
The water here is exceptionally clear, consistently earning the “AA” rating—the gold standard for water quality in Japan. On calm days, the transparency is so high that you can often see small fish swimming around your feet.
Ultimate Convenience for Yubana Mankai Guests
Staying at a ryokan right next to the beach comes with exclusive perks that make your summer holiday stress-free.
1. Early Luggage Drop-off
Arriving before check-in? No problem. You can drop off your luggage at our front desk and head straight to the beach. Make the most of your first day in Izu!
2. Exclusive Outdoor Shower & Changing Room
We provide a private outdoor shower and changing room exclusively for our staying guests. You can rinse off the salt and sand immediately after leaving the beach, ensuring you stay clean and comfortable before entering the ryokan.
3. From the Beach to the Private Onsen
After rinsing off at our outdoor shower, you can head straight to one of our 6 private hot spring baths. There is no better feeling than soaking in warm, mineral-rich water after a day in the ocean. We also have a coin laundry on-site to wash your swimwear right away.
⚠️ Important Note: Beach Towels
Please remember to bring your own beach towels. The towels provided in your room are strictly for use within the ryokan and at our onsen baths.

Plan Your Summer Escape Now
Right now, Atagawa is peaceful and quiet—the perfect time to secure your booking before the peak summer rush. Whether you’re a couple looking for a romantic retreat or a traveler seeking the “Blue” of Izu, we invite you to experience the ultimate Beach & Onsen holiday this summer.
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