Overview

Grand Hotel Taiyo gives you a casual seaside hot spring stay near the southern tip of the Boso Peninsula. Set on raised ground in Shirahama, Minamiboso, the hotel places the Pacific Ocean close to your room, meals, and daily walks. You come here for ocean scenery, a large seafood buffet, natural hot spring bathing, and an easy atmosphere that works well for couples, families, and groups.

The hotel has a comfortable retro character rather than the polished style of a new resort. Its main appeal comes from simple pleasures: watching the morning light over the Pacific, filling your plate with seafood, soaking in the open-air bath, and exploring the coastline around Cape Nojima.

You can reach the hotel from central Tokyo in around two hours by car under normal conditions. This makes it a practical choice when you want a coastal break without travelling too far from the city.

Accommodation

Grand Hotel Taiyo has 86 rooms, including ocean-view Japanese rooms, larger two-room Japanese layouts, mountain-side Western rooms, and a barrier-free room. All rooms are non-smoking, with a designated smoking space available inside the building.

The ocean-view Japanese rooms give you a traditional tatami setting with wide windows facing the Pacific. You can choose a 10-tatami room with or without an in-room bath, depending on your plan. During the day, you can sit beside the window, drink tea, and watch the sea. At night, futons transform the room into a comfortable sleeping space.

For more room, the 12-tatami and 4.5-tatami two-room layout gives you separate areas for relaxing and sleeping. This arrangement works well when you stay with family or friends and want more flexibility than a single tatami room.

The Western-style rooms face the mountain side and do not offer an ocean view. These rooms give you beds rather than futons and usually come at a more affordable rate, making them useful when you value straightforward comfort over coastal scenery.

A barrier-free room includes an accessible bathroom and toilet. Not every part of the hotel is completely step-free, so arrange this room in advance and share any mobility requirements before arrival.

Room equipment includes air conditioning and heating, a television, telephone, empty refrigerator, tea set, safe, towels, bath towels, yukata, slippers, and toothbrushes. Wi-Fi is available, while items such as a hair dryer or humidifier may be borrowed when required.

Dining

Dinner is one of the main reasons to stay at Grand Hotel Taiyo. The large buffet brings together around 80 Japanese, Western, and Chinese dishes, with seafood playing the leading role. You can return for more whenever you like during your assigned 90-minute dining period.

The buffet may include all-you-can-eat crab, sashimi, sushi, shellfish, grilled seafood, hot dishes, steak, and freshly fried tempura. A 1.7-metre boat-shaped platter creates a striking seafood display, while dishes such as grilled tuna collar bring the generous style of a seaside buffet to your table.

Desserts add a playful finish, with fruit, cakes, ice cream, and a popular chocolate fondue fountain. The exact selection changes according to the season, availability, and accommodation plan.

A 90-minute all-you-can-drink option is available with selected plans. Drinks may include draft beer, sake, shochu, whisky, and soft drinks. You can also apply at the hotel when availability allows, although arranging the option with your plan gives you a smoother start to dinner.

From January 2026, the standard dinner period runs from 6:00 PM to 7:30 PM. Breakfast is also served as a buffet, giving you Japanese and Western choices before you head out along the coast. Dining times can change when the hotel is busy, so confirm your assigned time at check-in.

Onsen and Wellness

The large baths use natural water from Shirahama Meraijima Onsen. The spring is a mild salt spring known for holding warmth after you leave the water. Traditional bathing indications include relief from sensitivity to cold, neuralgia, and rheumatic discomfort. You should enjoy these as established onsen indications rather than medical treatment.

Two bathing areas rotate between men and women, allowing you to experience both during an overnight stay. Suigetsu includes a hinoki open-air bath, where the scent of cypress adds to the warmth of the water. Hamayu gives you a rock-lined open-air bath with a more rugged Japanese garden atmosphere. Both sides also include spacious indoor baths.

Bathing hours run from 3:00 PM to midnight and again from 5:30 AM to 9:00 AM. The baths do not operate overnight, and there is no reservable private bath. The water uses heating, circulation, and filtration rather than a continuous source-flowing system.

The bathing areas include shampoo, conditioner, body soap, hair dryers, and basic changing-room items. Child-friendly bath products and equipment are also prepared, and a baby bed is available in the changing area. These touches make a first family onsen experience easier to manage.

Massage treatments can be arranged through the front desk for an added fee. A soak followed by a treatment gives you a relaxing way to finish a long drive or a day exploring Minamiboso.

Guests with Tattoos

Grand Hotel Taiyo does not have a reservable private bath, so you should clarify access before booking when hot spring bathing is an important part of your stay.

Facilities

Grand Hotel Taiyo includes an ocean-facing buffet venue, lobby lounge, café area, banquet halls, karaoke facilities, shop, vending machines, game corner, table-tennis area, massage arrangements, bicycle rental, children’s play space, elevators, free Wi-Fi, and complimentary on-site parking. Table tennis and bicycle rental are available for an added fee, while karaoke conditions depend on the room and time selected.

The children’s area gives younger members of your family somewhere to play indoors between meals and baths. Paid children receive an amenity bag with useful items such as a towel and toothbrush. The large baths also prepare child-friendly bathing products and a baby bed.

The shop carries local food and souvenirs from Chiba and Minamiboso, making it easy to pick up something before departure. A barrier-free room and accessible toilet are available, and a wheelchair may be used inside the building, although some areas still include steps.

Activities

You can begin the morning with a walk beside the sea and watch the light spread across the Pacific. The coastline around Shirahama gives you rocky shorelines, fishing-town scenery, open skies, and breezy paths that feel especially refreshing before breakfast or around sunset.

Nojimazaki Lighthouse and the coastal promenade at Cape Nojima are easy places to include in your stay. You can walk around the southern tip of the peninsula, look out over the ocean, and visit the lighthouse area before returning for dinner and a bath.

The wider Minamiboso region brings seasonal flowers, beaches, fishing ports, roadside stations, and local food shops within driving distance. Spring is known for bright flower fields, while the warmer months make it easy to combine your stay with swimming, coastal drives, or beach time.

Inside the hotel, you can play table tennis, visit the game corner, sing karaoke, or simply spend the afternoon in your ocean-view room. The hotel works well when you want a trip with enough entertainment but no pressure to follow a busy schedule.

Additional Features

Grand Hotel Taiyo is located at 3535-5 Shirahama, Shirahama-cho, Minamiboso, Chiba. Check-in begins at 3:00 PM, and check-out is at 10:00 AM. Free parking is available when you arrive by car.

The hotel is around 30 to 40 minutes from Tomiura Interchange, depending on traffic and your route. From JR Tateyama Station, the local bus journey takes around 40 minutes, followed by a walk of about seven minutes from the Awa-Shirahama bus stop. A pick-up service from the nearby bus stop may be arranged by calling after you arrive.

Some navigation systems direct you toward a narrow road behind the hotel. For a safer and easier arrival, follow the coastal road rather than the small back route.

Grand Hotel Taiyo suits you when you want an easygoing seaside stay with ocean-view Japanese rooms, a generous seafood buffet, natural hot spring baths, and useful family facilities. You can wake to the Pacific, explore the coast, eat as much as you like, and finish the day in warm Meraijima Onsen water.