I Looked Into the Hakone Sengokuhara Prince Hotel

On this blog, I sometimes look into places that could work not just for camping, but also for those "let's skip camping and do a hotel spa day instead" kind of days. This is another entry in that hotel-spa-detour series.

This time I looked into the Hakone Sengokuhara Prince Hotel. I'd had my eye on a few places in the Hakone area for a while, but what got me interested in checking this one out was hearing that the hot spring baths were apparently renovated in 2025.

What Kind of Place Is the Hakone Sengokuhara Prince Hotel?

Apparently this is a hotel in the Prince Hotel chain located in the Sengokuhara area of Hakone Town, Ashigarashimo District, Kanagawa Prefecture. You can apparently book directly through the hotel, through a 24-hour reservation center or by phone, and it's also available through OTAs like Rakuten Travel, Jalan, and JTB.

Check-in basically starts at 3:00 PM, but I couldn't confirm the standard check-out time since I couldn't find a specific mention of it on the official site. If you want to extend your stay, it seems like they may be able to accommodate that for a fee depending on availability that day, though you'd apparently need to inquire by the day before.

As for room rates, the plan listings on the official site don't show specific price ranges either—it seems you have to check availability for each individual plan to find out. Based on what I saw listed through travel agencies, a rough guide for two adults sharing one room for one night runs somewhere between 23,400 yen and 124,650 yen tax included, though it seems to vary quite a bit depending on the season and plan.

Komorin

The fact that the check-out time isn't clearly stated on the official site was a small thing that bugged me. It seems safer to confirm it when you make your reservation.

The Hot Spring Renovated with a Dry Landscape Garden, and Room Amenities

The bathing facility on the second floor apparently draws from Ubako Onsen, one of the seventeen hot springs of Hakone, and is a simple thermal spring. In March 2025, the garden of the open-air bath was apparently renovated into a dry landscape (karesansui) style, and a sauna was newly added at the same time—apparently you can see the ridgeline of the Hakone outer rim mountains from the open-air bath. There's an indoor bath, an open-air bath, a sauna, and a cold plunge pool, and the washing area apparently has 8 separated stations.

• Hours for overnight guests: apparently 2:00 PM to midnight, and 5:00 AM to 10:30 AM
• Day-use bathing is also available: 2:00 PM to 6:00 PM (last entry 5:00 PM), open year-round it seems, though there apparently may be periods when it's temporarily closed
• Day-use bathing rates: listed as 2,500 yen for general adults, 1,500 yen for member adults, 1,250 yen for children (elementary school age), and 750 yen for member children
• Bathing restrictions: it seems guests with tattoos are not permitted to use the baths, and those wearing diapers are also apparently not allowed in
• Crowd checking: apparently there's an app and a QR code available to check real-time crowd levels

The guest rooms are split across two buildings, Kodachi and Hikari, and there appear to be four room types ranging from Premier-type rooms in the 50-square-meter range up to types with sofa beds that can sleep 3–4 people. That said, I couldn't confirm details like Wi-Fi, refrigerators, TVs, or the total number of rooms for each type, since I couldn't find that information on the official site.

The hotel also apparently features a buffet restaurant called Grill, known for its windows overlooking the Hakone outer rim mountains, a French course restaurant called Place du Jour, tennis courts, and an adjacent golf course. There's free flat parking for 99 cars with no reservation needed, which might be reassuring if you're thinking of driving there. I don't actually drive myself, so this information is mainly for readers who do.

Komorin

Just imagining that dry landscape open-air bath sounds pretty amazing. It's also nice to hear that the sauna and cold plunge pool were just newly added.

Nearby Attractions and Rough Access Times

About a 9-minute walk from the hotel is the Sengokuhara Susuki Grassland (silver grass field), and within a few to a dozen or so minutes by car there seem to be a cluster of classic Hakone attractions, including the Lalique Museum, the Pola Museum of Art, the Hakone Glass Forest Museum, Owakudani, and Lake Ashi. Gotemba Premium Outlets is apparently about 35 minutes away by car, so shopping is an option if you're willing to go a bit further.

If you're taking the bullet train, there's apparently a reservation-only free shuttle bus for guests running once a day from Odawara Station (it seems you need to reserve by 3:00 PM the day before for the bus departing from Odawara Station). By taxi it's roughly 40 minutes and about 9,000 yen, and by local bus roughly 60 minutes and 1,440 yen, according to what's listed. By car, it's apparently about 25 minutes from the Gotemba Interchange on the Tomei Expressway via Otome Pass. Since I don't drive, I'd suggest treating this as reference information for those who actually plan to use these routes.

Rakuten Mobile Signal Conditions

When I checked this location using the official My Area Connectivity Simulation tool, the overall rating came back as C.

Given that C rating, it might be worth checking the connectivity situation ahead of time. The Sengokuhara area also seems to be situated among the mountains, so if this concerns you, it might be reassuring to check the official tool yourself as well.

Komorin

A C rating is just something I have to report honestly. I think the best approach is to go in expecting to relax in the hot springs and let go of connectivity expectations a bit.

Wrapping Up

Putting it all together, my impression of the Hakone Sengokuhara Prince Hotel is that its main appeal is the hot spring, with its renovated dry landscape open-air bath and sauna. With four room types available, it seems like an easy pick for a hotel-spa getaway.

That said, there were a few things I couldn't fully confirm from the official site alone, like the exact check-out time and detailed room amenities. It's probably a good idea to inquire directly about anything you're curious about before booking. As for Rakuten Mobile, the signal rating came back as C, so if connectivity matters to you, it might be worth checking for yourself too.

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Related Links

• Official Site