Overview

Kamenoi Hotel Oarai is a hot spring hotel on a hill overlooking the Pacific Ocean and the Naka River in Oarai, Ibaraki. From the property, you can enjoy views of Kaimon Bridge, the river mouth, open water, and sunrise light over the coast. The hotel completed a major renewal on July 18, 2025, refreshing rooms, the restaurant, the large bath changing area, the post-bath rest area, the lobby, and the shop.

This stay suits you when you want coastal scenery, seafood, hot spring bathing, and easy access to Oarai sightseeing. You can arrive by car, use the free shuttle from Oarai Station with advance reservation, enjoy a kaiseki dinner or breakfast buffet, then relax in the large public bath or a room with its own natural hot spring bath.

Accommodation

You can choose from rooms with natural hot spring baths, Western-style rooms, Japanese-style rooms, and accessible rooms. Renewed room types include the Premium Room with Open-Air Hot Spring Bath, Japanese-Western Room with Open-Air Hot Spring Bath, Room with Open-Air Hot Spring Bath, and Japanese-Western Room with View Bath. These rooms give you a more private bathing experience while keeping the waterside scenery close.

The Premium Room with Open-Air Hot Spring Bath faces peaceful waterside views and includes two beds, a daybed, and a junior bed. The Japanese-Western room with open-air bath combines Japanese atmosphere with bedded comfort and a natural hot spring open-air bath. The room with open-air bath looks toward the Naka River mouth and Kaimon Bridge, giving you a private place to soak while taking in the view. The Japanese-Western view-bath room lets you enjoy natural hot spring water indoors through a large window facing the water.

Western-style options include the top-floor Superior Room with bath, Superior Room with bath, Family Room with bath, Japanese Modern Twin, Standard Room, Superior Compact Twin with bath, Compact Twin with bath, and Accessible Room with bath. The top-floor Superior Room gives you an elevated view of the waterside scenery, while the Family Room adds a wider layout for a more relaxed group stay. The Japanese Modern Twin gives you tatami warmth with beds, so you can take off your shoes and unwind easily.

Japanese-style rooms include 10-tatami and 8-tatami layouts. The 10-tatami room gives you more space to stretch out on tatami, while the 8-tatami room offers a simpler Japanese-style stay. The Accessible Room has wider passages, a wider entrance, and a flatter layout, though the entrance has a slightly raised ramp.

All rooms are non-smoking and include free Wi-Fi, USB ports, humidifying air purifier, slippers, bath towels, towels, toothbrushes, drawstring bag, electric kettle, hair dryer, TV, refrigerator, safe, and warm-water washing toilet. Yukata, cotton swabs, hair ties, and similar items are available at the front desk. Rooms with bathtubs include shampoo, rinse, and body soap.

Dining

Dining was renewed on July 18, 2025, with meals focused on seafood and Ibaraki flavors. Dinner is served at the restaurant rather than in your room, and the meal style depends on your plan. Kaiseki courses include seasonal seafood, Oarai’s hamayaki grilled seafood, Hitachi beef, anglerfish dishes, sashimi, and Ibaraki sweets such as sweet potato pudding.

The Special Kaiseki Course centers on seafood and Oarai hamayaki. Seasonal examples include sashimi with raw whitebait, scallops, seared octopus, steamed abalone, and swordfish; hamayaki; anglerfish with seasonal vegetables; Hitachi beef; noodles or rice; and local desserts. Summer examples include raw whitebait, steamed abalone, seared octopus, salmon, okra, sea urchin, hamayaki, anglerfish with summer vegetables, and Hitachi beef roast beef.

Other course styles include the Land’s Blessings Kaiseki, Seasonal Kaiseki, and Extreme Kaiseki. Depending on the season, you may enjoy Hitachi beef sukiyaki, oyster bourguignon, eel and eggplant, seafood clam soup, Hitachi Kagayaki pork, crab clay-pot rice, or Ibaraki local-style fried soba. Extra dishes can include grilled abalone, boiled sea bream, lobster sashimi, and grilled seafood, depending on availability.

Breakfast is a buffet with local and seafood-rich flavors, served in the morning at the restaurant. At night, you can enjoy Kamenoi Hotel’s complimentary dandan noodles service, with one bowl per person during the late-night service time. The rotating flavors include red Sichuan dandanmen, black sesame dandanmen, and white sesame dandanmen.

Food allergies should be discussed when you reserve. Some allergy-friendly changes may be possible for selected menus, but same-day requests cannot be handled, and buffet-style dishes may carry cross-contact risk.

Onsen and Wellness

The bath area gives you views of the Pacific Ocean and the Naka River. You can use the large public bath, open-air bath, and a private bath. The public bath area includes one indoor bath and one open-air bath, with body soap, shampoo, conditioner, and hair dryer available in the bath area. You bring your bath towel from your room.

The spring quality listed for Oarai Onsen is sodium-chloride cold spring water. Listed bathing indications include neuralgia, muscle pain, joint pain, frozen shoulder, joint stiffness, bruises, sprains, chronic digestive issues, hemorrhoids, sensitivity to cold, recovery after illness, and health promotion.

The large public bath and open-air bath give you a wide, open setting for soaking, while the private bath gives you a reserved bathing option in a more personal space. The hotel pages differ slightly in how they describe the water used in each bath area: the hot spring page lists the private bath with Oarai Onsen spring details, while the FAQ describes the private bath as Kōmeiseki quasi-natural hot spring. When the exact water type matters to your stay, confirm the current private-bath details before arrival..

Guests with tattoos

If you have tattoos, you cannot use the public bath unless the tattoo is fully covered so it cannot be seen by others. A cover sticker can allow access when the tattoo is hidden. The private bath gives you a more private option by reservation, and rooms with natural hot spring baths are the best choice when you want the most comfortable bathing experience with tattoos.

Facilities

Kamenoi Hotel Oarai gives you easy spaces to enjoy the view before and after meals. The lobby lounge faces the Naka River and the Pacific, and after check-in you can enjoy a drink there during lounge service. The shop was renewed and carries seafood products, sweets, clothing, small goods, local beer, Oarai shirasu senbei, and dried sweet potato from Hitachinaka.

For simple indoor time, you can play table tennis on the basement floor, use the coin laundry, or browse the shop for Ibaraki souvenirs. The building has Wi-Fi throughout, though reception may be weaker in some spots. The property is non-smoking, with smoking rooms inside the building.

You also have free parking, EV charging, vending machines for soft drinks and alcohol, elevator access, wheelchair loan in limited numbers, and wheelchair-accessible toilets with handrails and emergency call systems on the reception or restaurant floor. The free shuttle from Oarai Station runs by reservation, with listed service from the station in the afternoon and from the hotel in the morning.

Activities

You can use the hotel as a base for Oarai’s coast, aquarium, shrine, markets, parks, and wider Ibaraki sightseeing. Aqua World Ibaraki Oarai Aquarium is close enough for an easy outing, while Oarai Isosaki Shrine and Nakaminato Fish Market are both about 10 minutes away by car. Hitachi Seaside Park is about 20 minutes away by car, and Kairakuen is about 40 minutes away by car.

If you want a slower stay, you can keep your plans simple: watch Kaimon Bridge and the water from the property, enjoy the lobby lounge, take a bath, reserve the private bath, or choose a room with its own hot spring bath and spend more time in your room.

Additional features

Kamenoi Hotel Oarai gives you renewed rooms and dining areas, natural hot spring bath room options, large public baths with ocean and river views, open-air bathing, a private bath by reservation, kaiseki dining, breakfast buffet, complimentary late-night dandan noodles, lobby lounge, shop, table tennis, coin laundry, free Wi-Fi, free parking, EV charging, smoking rooms, accessible room options, and a free reservation-based shuttle from Oarai Station.