Grand Mercure Minamiboso Resort & Spa グランドメルキュール南房総リゾート＆スパ 南房總美爵溫泉度假酒店

Grand Mercure Minamiboso Resort & Spa is a seaside-and-forest destination resort located within Minamiboso Quasi-National Park on Cape Taibusa in Minamiboso City, Chiba. Formerly known as “Hotel & Resorts Minamiboso” (previously Tomiura Royal Hotel), the property reopened under the Grand Mercure brand in April 2024. It sits about 90 minutes from central Tokyo via the Aqua-Line and roughly eight minutes from the Tomiura IC on the Futtsu–Tateyama Road, making it an easy getaway for weekend drives and family trips.

The hotel is surrounded by the natural scenery of Cape Taibusa, an area developed as a nature park with walking trails, scenic lookouts, and rocky shoreline spots ideal for exploring. Guests can enjoy year-round activities such as hiking, nature walks, and birdwatching while taking in sea breezes, the sound of waves, and the scent of the ocean—an atmosphere that defines the resort’s appeal.

The resort features 197 guest rooms, all at least 36 sqm. Ocean-view rooms overlook Tokyo Bay and its changing colors throughout the day, while mountain-side rooms open onto lush forest scenery. Room types include twins, doubles, Japanese-Western hybrids, triples, and larger multi-bed rooms suitable for groups of four or more—accommodating couples, families, and group travelers alike.

The hotel is certified as a “Baby-Friendly Accommodation,” offering family-oriented services such as baby beds, bed guards, children’s amenities (advance request recommended), and a kids’ play area. Some rooms are also pet-friendly, allowing guests to stay with their dogs and making the property suitable for multigenerational or pet-inclusive trips.

The spa area centers around a large indoor bath, sauna, and an open-air rock bath with distant sea views. Guests can unwind while watching the sunset or stargazing from the outdoor bath. The spacious indoor bath is family-friendly, and a wellness lounge offers a place to relax with drinks after bathing—ideal for refreshing after travel or outdoor activities.

Dining is primarily buffet-style, featuring local seafood, seasonal vegetables from the Boso region, and a variety of Japanese and Western dishes. Breakfast and dinner buffets allow guests to choose freely according to their tastes, making the meals enjoyable for both adults and children. Plans typically center on buffet dining, allowing for flexible mealtime pacing.

A signature feature of Grand Mercure Minamiboso Resort & Spa is its all-inclusive style. Many plans include dinner, breakfast, lounge drinks (alcoholic and non-alcoholic), light snacks, access to the public bath, and selected activities. All rooms come with lounge access, where guests can enjoy sparkling wine, beer, coffee, juice, herbal water, and more—ideal for those who want to check in and then spend a leisurely time entirely within the resort.

Facilities include restaurants, lounges, a kids’ play area, an indoor kids’ park with wooden toys and slides, a seasonal outdoor pool, a gift shop, a game corner, karaoke rooms, banquet halls, and meeting spaces. The indoor kids’ park is especially useful on rainy or windy days, and the combination of outdoor nature activities and indoor play areas makes the resort convenient for families traveling with young children.

For access, the hotel provides a shuttle service from JR Tomiura Station on the Uchibo Line and from the Highway Bus stop at “Michi-no-Eki Tomiura Biwakurabu,” taking about ten minutes. By car, the property is roughly eight minutes from the Tomiura IC, and the on-site surface parking lot accommodates around 150 vehicles with no reservation required for standard passenger cars. Since road and operational conditions may vary, checking the latest information on the official website is recommended.

With Minamiboso’s mild climate, its blend of ocean and forest scenery, the ease of an all-inclusive stay, and extensive family-friendly facilities, Grand Mercure Minamiboso Resort & Spa is well suited for guests seeking a relaxed getaway close to Tokyo, a resort that’s easy for families with young children, or a nature-and-onsen experience combined with coastal drives and local dining.