Here are some highly-recommended onsen near Tokyo that meet your criteria of being open year-round, suitable for families with young children, and having English-speaking staff:
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Hakone Yuryo (箱根ゆうり)
- Location: Hakone, Kanagawa Prefecture (about 1.5-2 hours from Tokyo)
- Features: This onsen offers private family baths and outdoor baths with stunning views of nature. The facility is child-friendly and has English-speaking staff. They also offer amenities for young children.
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Thermal Spa Resort (スパリゾートハワイアンズ)
- Location: Iwaki, Fukushima Prefecture (about 2 hours from Tokyo)
- Features: This resort is part water park and part onsen, making it perfect for families. With indoor and outdoor onsen, slides, and pools, it offers activities for children of all ages. English-speaking staff are available and they offer special family packages.
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Oedo Onsen Monogatari (お江戸温泉物語)
- Location: Odaiba, Tokyo
- Features: This is a theme park-style onsen with various bathing areas, dining options, and entertainment. The facility is designed for families and has designated areas for children. English-speaking staff are present to assist visitors.
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Kusatsu Onsen (草津温泉) - Yubatake (湯畑) Area
- Location: Kusatsu, Nagano Prefecture (about 4 hours from Tokyo)
- Features: Kusatsu Onsen is famous for its sulfuric waters and beautiful scenery. While it's further from Tokyo, it is a great family-friendly destination with various ryokan (traditional inns) offering child-friendly service. English-speaking staff can be found in some accommodation options.
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Nikko Tokinoyuu (日光東照宮温泉)
- Location: Nikko, Tochigi Prefecture (about 2 hours from Tokyo)
- Features: This onsen offers a serene setting near the beautiful Nikko National Park. Accommodations usually cater to families and have staff who can communicate in English. Private family baths are available, too.
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Manza Onsen (万座温泉)
- Location: Near Shima, Nagano Prefecture (about 4 hours from Tokyo)
- Features: Manza Onsen is located at a high altitude, offering mineral-rich waters and various outdoor hot springs. Many ryokan here are child-friendly and some staff speak English.
Be sure to check availability and make reservations in advance, especially if you're traveling during peak seasons. Enjoy your onsen experience!