Risonare vs Grand Mercure Yatsugatake: Family Choice

The Risonare vs Grand Mercure Yatsugatake question comes down to one thing: water play. Pick RISONARE Yatsugatake if a Yatsugatake stay should include an indoor pool your kids can use every day of the trip — it runs year-round, included with most stay plans, alongside a ten-item kids' play area. Pick Grand Mercure Yatsugatake Resort & Spa if you'd rather build the stay around free indoor play and all-inclusive buffet meals; its own FAQ states plainly that the hotel has no pool at all. Both sit in the Hokuto area of Yamanashi Prefecture and both welcome families, but they answer different questions, and mixing them up wastes the point of comparing them.

RISONARE Yatsugatake vs Grand Mercure Yatsugatake, at a glance

RISONARE Yatsugatake and Grand Mercure Yatsugatake Resort & Spa both sit in Hokuto, Yamanashi, and both take family hospitality seriously, but they build a mountain-resort stay around two different amenities: an indoor pool at one, free indoor play and included meals at the other.

Two different ideas of a mountain resort

RISONARE Yatsugatake and Grand Mercure Yatsugatake sit close together in Hokuto, but they are not two versions of the same amenity — check each hotel's own current pages rather than assuming one implies the other.

RISONARE's water park is Il Mare, an indoor pool open year-round from 8:00 AM to 6:00 PM, with last entry at 5:00 PM. It's included with most stay plans — the exceptions are corporate-membership bookings and plans specifically sold without pool access, which are billed separately. Children 12 and under need an adult in swimwear in the water with them, at a ratio of up to three kids per adult. Kids in diapers need both a swim diaper and regular swimwear; both are available at the reception desk for ¥800 per pack of four, a facility rental charge rather than a room rate. The kids' area inside the pool holds ten play items, including a slide that requires a minimum height of 110 cm and a smaller "bumpy" slide that requires 80 cm. Day-trip use is possible too, but only with a full online booking that closes at 5:00 PM the day before — there's no walk-in access. Full detail is on RISONARE's own children's service page.

Grand Mercure Yatsugatake's own FAQ page states it directly: the hotel does not have a pool. What it has instead is Mori no 8, a free indoor play floor on the basement level, open from 7:00 to 11:00 AM and again from 2:00 to 8:00 PM. It's included for overnight guests and is not open to day-trippers. Inside, there's climbing equipment, bumper cars, a tricycle drift circuit, six table-tennis tables, and a dedicated safety area for children aged 0-6; a third-floor area adds a play train and instruments — see the resort's own facilities page.

The two also split parents' time differently. At RISONARE, childcare is offered while a parent dines at OTTO SETTE or uses the spa, though the resort doesn't publish which ages that covers. At Grand Mercure, the all-inclusive structure — dinner, breakfast, and basic lounge drinks and snacks folded into the room rate — means fewer decisions to make each evening, and parents can use Mori no 8's supervision-light setup while the kids play nearby.

Firsthand: what I can and can't tell you

I've visited RISONARE Yatsugatake myself, and two things stuck with me: I liked the streetscape at RISONARE Yatsugatake, and the pool was a highlight. I was surprised by how impressive the indoor pool was. That's the extent of what I can speak to firsthand — I don't have confirmed dates, a room type, or details of how I used the pool that trip, so I'm not going to dress this up as a full stay report.

I haven't visited Grand Mercure Yatsugatake at all, and nothing in this guide about its play floor, meals, or all-inclusive plan comes from a stay there — that half of the comparison is built entirely from the resort's own current pages, not from experience. I'm not claiming to have compared the two hotels by sleeping at both, and neither should you take this as a review of Grand Mercure's guest experience.

What costs extra at each hotel

Neither resort's "included" language covers everything, so it's worth knowing what's billed separately before you book.

At RISONARE, the pool itself is included with most stay plans, and the ¥800-per-four-pack diaper-and-swimwear rental is the one small facility charge tied to it. Children's dining is priced by age and by restaurant: at the buffet-and-grill YYgrill, dinner is ¥4,340 and breakfast ¥1,960 for ages 7-11, dropping to ¥3,100 and ¥1,400 for ages 4-6, with kids 3 and under eating free; baby food at YYgrill is also free, with two types of rice porridge plus purée and toppings. At the course restaurant OTTO SETTE, dinner runs ¥8,470 for ages 7-11 and ¥6,050 for ages 4-6, and baby food there is paid — three types at ¥500 each. These are meal charges, not room rates, and a family choosing between the two restaurants should budget for the difference.

At Grand Mercure, the all-inclusive plan is the wider net: dinner, breakfast, basic lounge drinks and snacks, and use of the baths are all folded into the room rate, and Mori no 8 costs nothing on top of that. Baby food for infants aged 5 to 12 months is available. Book the plan directly on the resort's own site and you can reach a version where children aged 0-6 co-sleep free of charge — room and meals both — for up to two kids per room, while elementary-school-age children are charged the same as an adult rather than a discounted kids' rate. For a fuller breakdown of what "half-board," "dinner included," and "all-inclusive" actually cover at family resorts like these, see our guide to booking dinner included at Japan family hotels.

Checked September 2026: one pool, two play floors, two shuttle towns

Of the two Yatsugatake resorts compared in this guide, one has a swimming pool and one does not: RISONARE runs Il Mare with its own kids' area built in, while Grand Mercure's FAQ rules a pool out entirely and runs a separate indoor play floor, Mori no 8, instead. Both nonetheless run a free shuttle bus from their own nearest train station and both stock baby food for infants at their restaurants (checked September 2026).

Getting there without assuming the two stations are the same

RISONARE Yatsugatake and Grand Mercure Yatsugatake are served by two different train lines and two different stations, and the shuttle only runs one way from each. RISONARE's free shuttle connects to JR Kobuchizawa Station on the Chuo Line, about a 5-minute ride, and the resort publishes its timetable: on the 1 July to 30 November 2026 schedule, twelve runs leave the station between 9:10 and 17:05, timed to train arrivals rather than a fixed interval. Nothing on that timetable mentions reserving a seat, but it warns you may not board a full bus. Grand Mercure's free shuttle connects to JR Kai-Izumi Station on the Koumi Line, about 3 minutes (1.5 km) away, and it's explicitly first-come with no reservation needed — but it's for overnight guests only. If you're planning this leg without a rental car from Tokyo, our broader breakdown of skipping the car for a Yatsugatake or Izu resort trip covers the train connections into both stations. Both hotels also sit inside our wider case for treating the resort itself as the family holiday rather than a base for sightseeing.

One more date worth building into a winter 2027 trip: Grand Mercure has announced a scheduled maintenance closure from noon on February 3, 2027, through 1:00 PM on February 5, 2027. Grand Mercure's all-inclusive plan also folds in use of its baths; if a private family bath matters more to your trip than a shared one, our guide to visiting an onsen with kids in Japan covers that question separately from this comparison.

Choosing between the two

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Things worth booking before you land, all in English:

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• Tickets and day trips — Klook covers the Japan Rail Pass, teamLab tickets, and shinkansen-linked day trips; booking ahead skips the ticket-window line.

FAQ: RISONARE vs Grand Mercure Yatsugatake

Does the RISONARE Yatsugatake pool cost extra?

For most stay plans it's included in the room rate for the length of your stay. The exceptions are corporate-membership bookings and plans specifically sold without pool access, which are billed separately, so check what your plan includes before you book.

Can we use the RISONARE pool without staying overnight?

Yes, day-trip use is possible, but only through advance online booking, and that booking window closes at 5:00 PM the day before your visit. There's no walk-in access, so it isn't a spontaneous stop on a driving day.

Is Grand Mercure Yatsugatake's indoor play floor free?

Yes. Mori no 8, the basement-level play floor, is included for overnight guests at no extra charge, and it's open from 7:00 to 11:00 AM and again from 2:00 to 8:00 PM. It's limited to hotel guests, so day-trippers can't use it.

Is Grand Mercure Yatsugatake open year-round?

It's open most of the year, but the resort has announced a scheduled maintenance closure from noon on February 3, 2027, through 1:00 PM on February 5, 2027. A family planning a winter 2027 trip should build that closure into their dates before booking.