Mina-Mina Beach, located within the Hoshino Resort Tomamu, stands out as Japan's largest indoor wave pool. It's a significant attraction, particularly for those seeking relaxation and fun, especially during the cold winter months. The facility combines a large heated wave pool with several hot tubs and a highly praised outdoor onsen (hot spring), offering a unique blend of aquatic entertainment and traditional Japanese relaxation.
Visitors consistently highlight the wave pool as a major draw, with waves generated every 30 minutes for about 10 minutes, providing excitement for all ages. Many appreciate the warm water temperature (around 30°C) which makes it an ideal retreat from the cold. The outdoor onsen, Kirin-no-Yu, receives particular acclaim for its serene atmosphere and stunning views of the snowy forest, especially at night or during a full moon. Reviewers frequently mention the cleanliness of the facilities, including the locker rooms and changing areas, and the helpfulness of the staff. Families with children find the dedicated kids' pools and the availability of rental floats to be excellent additions.
For a comfortable visit, it's advisable to arrive early, perhaps right at opening (11 AM), to avoid peak crowds, especially if you prefer a less busy swimming experience. The onsen typically opens later, around 3 PM, and some visitors suggest the dinner hour (around 6-7 PM) as the best time for a quieter onsen experience. While floats are available for rent (around ¥1,500), some activities like paddleboarding or tightrope walking might incur additional costs. It's recommended to bring cash for float rentals. The facility provides amenities like shampoo, conditioner, and soap, and even a spinner to dry swimsuits, so you don't need to pack these. Plan to spend 2-3 hours to fully enjoy both the pool and the onsen.
Mina-Mina Beach is conveniently located within the Hoshino Resort Tomamu. For guests staying at the resort, a shuttle bus service runs every 15 minutes, connecting various resort areas, including Mina-Mina Beach. It is also a short walk from Club Med Tomamu, with complimentary access often provided for Club Med guests. The address is Nakatomamu Hoshino Resort Tomamu, Shimukappu-mura, Hokkaido.
A common complaint among some visitors is the potential for overcrowding, especially during busy periods. While the wave pool is large, it can feel congested when many people are using inflatables, making serious swimming difficult. Some also note that the waves might not be as strong as expected for those accustomed to larger wave pools. To mitigate crowding, consider visiting during off-peak hours, such as early morning or during dinner time. Another point of concern for some is the strict tattoo policy for the onsen; individuals with tattoos need to cover them, and stickers for this purpose are sold at the counter. A few isolated incidents of staff rudeness have been reported, though overall sentiment towards staff is positive.
