Whether you’re visiting the Nemophila or Kochia exhibits at Hitachi Seaside Park, enjoying a food crawl at Nakaminato Osakana Ichiba, or going swimming in the summer, the Oarai and Hitachinaka area is a popular destination for family vacations and trips with friends. Here, we introduce 13 accommodations where groups of 6 or more can stay together, categorized into four types: whole-house rentals, glamping, traditional inns (ryokan), and guesthouses.
3 Key Points for Choosing Accommodations for Large Groups
When planning a trip for a group of six or more, there are three key points to keep in mind when selecting accommodations.
1. Check the capacity per room (or per building)
As a general guideline, traditional Japanese-style rooms in ryokans can accommodate 6–8 people, while entire-property rentals can accommodate 8–10 people. Since splitting into multiple rooms can end up keeping everyone separated, be sure to check the “maximum number of people who can stay together in the same space.”
2. Check the number of parking spaces
In this area, large groups often travel in 2–3 cars. It’s best to confirm in advance the number of free parking spaces available and whether reservations are required.
3. Consider meal options
With a large group, everyone’s dining preferences will vary. For an entire-building rental, facilities that allow for BBQs or self-catering are convenient. For traditional inns, check whether they offer banquet plans or in-room dining.
Entire House Rentals | Enjoy Group Travel in a Private Space
1. Hiraiso Garden Villa
A brand-new, fully private rental completed in 2024. It boasts an excellent location: a 1-minute walk to Hiraiso Beach, a 5-minute drive to Nakaminato Osakana Ichiba, and about a 12-minute drive to Hitachi Seaside Park. Accommodating up to 8 guests, it’s perfect for multi-generational family trips or groups of friends.Designed by a dog-loving owner with the concept of a “vacation home where you can enjoy time with your dog,” the property allows up to two small dogs (8 kg or less) to stay. It features natural interiors that exude the warmth of wood and a spacious garden, where you can enjoy BBQs and fireworks at no extra charge.Free parking for 3 cars is available. It has earned a high rating of 5.0 stars on Airbnb. Check-in is at 3:00 PM, and check-out is at 10:00 AM. Since it is located on the Hitachinaka side, the risk of traffic congestion during the Nemophila season is relatively low.
https://www.airbnb.jp/rooms/1515005424508761077 2. Guest House MOANA
A 5-minute walk to Nakaminato Osakana Ichiba and about a 15-minute drive to Hitachi Seaside Park. This guesthouse offers exclusive use of an entire 8-bedroom, 1-living room, 1-dining room, 1-kitchen house, limited to one group per day. It can accommodate up to 9 guests, making it perfect for group trips involving 2–3 families.The second floor features 6 bunk beds and 3 single beds, and the rooftop offers a panoramic view of the ocean. Renovated in 2017, the property is clean and well-maintained. Since this is a room-only plan, meals are not included, but there is a fish market within walking distance, so dining out is no problem. Free parking is available for two cars. It is a 5-minute drive from Nakaminato Station.
画像提供: 楽天トラベル 3. Sunrise Villa Oarai
About a 5-minute drive to Oarai Sun Beach and about a 15–20-minute drive to Hitachi Seaside Park.There are three luxury villas with Balinese-style interiors. Each villa can accommodate up to 6 guests, and all three can be rented together to accommodate up to 18 guests. Each villa features a spacious area of over 100 square meters and is fully equipped with a kitchen and laundry facilities. The outdoor living area includes a gas grill for BBQs (grill usage fee: 5,000 yen; BBQ option: 9,900 yen per group).The property also features a garden pool (illuminated at night), a HARVIA sauna & spa, and a bar lounge, making it ideal for adult group trips and wedding after-parties. An all-you-can-drink plan (3,300 yen for 2 hours) is available. Private rental of all three villas starts at 419,000 yen. Free parking for 30 cars. It is about a 9-minute drive from the Mito-Oarai Interchange.
画像提供: 楽天トラベル 4. Oarai Park Hotel
Located about a 6-minute drive from Oarai Beach and a 15–20-minute drive from Hitachi Seaside Park, this resort hotel reopened in March 2026 following a renovation. The highlight is the 90-square-meter villa-style accommodation (sleeps 6).This luxurious space features a private open-air hot spring bath, a HARVIA sauna, a cold plunge pool, and a kitchen, and you can enjoy BBQs on the terrace using a Weber grill. Set in a resort-like location surrounded by pine forests, it is also close to Aqua World Oarai Aquarium. There are also three pet-friendly dog villas (capacity: 5 guests, 83 square meters, with a private dog run). Free parking for 40 cars. A 7-minute taxi ride from Oarai Station.
画像提供: 楽天トラベル 5. Oarai Detached House / Vacation Rental
A 4-minute walk from Oarai Station and about a 15–20-minute drive to Hitachi Seaside Park. This is a detached house-style vacation rental that can accommodate up to 8 guests. It’s conveniently located just a 10-minute walk from the beach, making it ideal for swimming. With parking for two cars, it’s perfect for groups traveling by car. The room-only plan allows you to rent the entire house, so you can enjoy your time with your group without worrying about others.
画像提供: 楽天トラベル Glamping | Enjoy outdoor experiences with a large group
6. Coton Hitachinaka Grand Villa
Located just a 3-minute drive from Hitachi Seaside Park, this property offers the best access among the 13 facilities featured here. Of the 18 units, the “Twin Dome Tent” type can accommodate up to 6 guests. These all-weather dome tents are equipped with individual air conditioning and Wi-Fi, ensuring a comfortable glamping experience. If two families book adjacent units, they can connect the dining tables to enjoy meals together.For BBQ, premium ingredients such as Hitachi Wagyu Beef, tomahawk pork, and lobster are provided, allowing you to savor authentic outdoor cuisine on a Weber grill. A bring-your-own-food BBQ plan is also available. A 12-minute taxi ride from Katsuta Station. Free parking for 30 cars.
Ryokan & Hotels | Enjoy hot springs and seafood cuisine with a large group
7. Hiraiso Building
About a 10-minute drive to Hitachi Seaside Park. This long-established ryokan is located right in front of Hiraiso Beach. The spacious Japanese-style rooms can accommodate up to 8 guests, making them ideal for large group trips. The panoramic bath offers a sweeping view of the Pacific Ocean, and in winter, the ryokan prides itself on seasonal seafood dishes, including Anglerfish Hotpot.The inn actively accommodates training camps and group stays, and offers lunch plans for groups (starting at 2,500 yen). It is a 10-minute walk from Hiraiso Station and a 10-minute drive from Hitachinaka IC. Parking is available for 20 cars.
画像提供: 楽天トラベル 8. Izozaki Onsen Hotel New Seiroki
About a 7-minute drive to Hitachi Seaside Park. This hot spring hotel has 21 rooms and can accommodate up to 92 guests.The Japanese-style rooms facing the ocean can accommodate up to 6 guests, and some rooms feature open-air baths overlooking the Pacific Ocean. For large groups, we recommend booking multiple rooms so everyone can enjoy the hot springs and seafood kaiseki meals together. The hotel’s thoughtful hospitality, including complimentary Saza Coffee and rental of colorful yukata robes, is another highlight. Shuttle service is available from Isozaki Station (reservation required). The hotel offers free parking for 94 vehicles and accommodates large vehicles.
画像提供: 楽天トラベル 9. Oarai Onsen Hotel Oarai Mairin-kan
Located just a 1-minute drive from Oarai Station and about a 15–20-minute drive from Hitachi Seaside Park. This hot spring hotel features 14 rooms in total; the 12-tatami-mat Heian-style Japanese rooms can accommodate up to 6 guests. These spacious rooms are popular with large groups and offer a relaxing atmosphere.Meals are served in completely private dining rooms, allowing your group to enjoy exclusive time together. The teppanyaki plan, a rarity in Oarai, is also popular. Soak away the fatigue of your journey in the large public bath at Oarai Onsen. Parking is available for 50 cars (550 yen per day; reservation required). It is about a 5-minute drive from the Mito-Oarai Interchange.
画像提供: 楽天トラベル 10. Kasuga Hotel: A Place for Seafood Cuisine and Wine
A 1-minute walk to Nakaminato Osakana Ichiba and about a 15-minute drive to Hitachi Seaside Park. Established in 1933, this historic ryokan features a total of 22 rooms, including 13 Japanese-style rooms and 9 Western-style rooms.The spacious Japanese-style rooms can accommodate up to 6 guests. The inn is fully equipped with banquet facilities, making it ideal for large group dinners. In addition to seafood dishes, guests can enjoy wine pairings carefully selected by a sommelier—a unique feature not found at other inns. The winter seasons at Anglerfish Hotpot and Hitachi Wagyu Beef are also popular. With parking for approximately 60 vehicles, large groups can stay with peace of mind. It is a 10-minute walk from Nakaminato Station.
画像提供: 楽天トラベル 11. Kappo Ryokan Sakaya Honten
A 5-minute taxi ride from Oarai Station, and about a 15- to 20-minute drive to Hitachi Seaside Park. This kappo ryokan has been in operation for seven generations since the Meiji era and features eight traditional Japanese-style rooms. The “Matsu-no-ma” consists of two adjoining rooms (10 tatami mats + 6 tatami mats) and can accommodate up to six guests.There is a large banquet hall that can accommodate up to 60 people, making it suitable for group and corporate banquets. A free shuttle service is available for groups of up to 25 people. In addition to the large communal bath, there is also a private bath available for groups to enjoy a relaxing soak together. The inn is renowned for its kaiseki cuisine featuring local seafood and Anglerfish Hotpot. It is also known as a sacred site for "Girls und Panzer." Free parking for 30 cars.
画像提供: 楽天トラベル Guesthouse | Affordable Accommodations for Large Groups
12. Year-Round Guesthouse Kuroze Sushi
Boasting excellent access, it is about a 3-minute drive from the Hitachi Seaside Park IC. It is located a 2- to 3-minute walk from Ajigaura Station. With a total of 7 Japanese-style rooms, the spacious 14-tatami-mat room can accommodate up to 6 guests.Both dinner and breakfast are served in your room, and the specialty is a Japanese-style meal featuring four pieces of fresh sushi made on-site at the attached sushi restaurant. The ability to relax and enjoy meals in your room even with a large group is a unique charm of staying at a minshuku. Free parking for 20 cars. As one of the closest accommodations to Hitachi Seaside Park, it’s an ideal base for the Nemophila and Kochia seasons.
画像提供: 楽天トラベル 13. Oarai Minshuku Ryokan Shirahama-so
Located 300 meters from Oarai Beach, 500 meters from Oarai Isosaki Shrine, and about a 15–20-minute drive from Hitachi Seaside Park.Located on a hilltop, this minshuku inn offers a stunning view of Oarai Port and the ocean. Guests can enjoy views of the sea and the port from the Japanese-style rooms. BBQ facilities are available, and the inn features separate gender-specific baths with alkaline mineral water. It accommodates group stays and long-term stays, making it ideal for large groups. Free parking for 15 cars. A 5-minute drive from Oarai Station (shuttle service available—please call in advance).
画像提供: 楽天トラベル Comparison Chart
Accommodations for Large Groups Comparison Chart
| Facility Name | Area | Type | Capacity | Estimated Price | BBQ | Hot Spring | Distance to the Seaside Park | Parking |
|---|---|---|---|---|---|---|---|---|
| Hiraiso Garden Villa | Hitachinaka | Entire House | 8 guests | From ¥38,000/unit | Available (Free) | − | 12-minute drive | 3 free parking spaces |
| Guest House MOANA | Hitachinaka | Entire house | 9 guests | From ¥12,775 | − | − | 15-minute drive | 2 free parking spaces |
| Sunrise Villa Oarai | Oarai | Villa | 6 guests per villa | From ¥29,420 | Available (for a fee) | − | 15–20 min by car | 30 spaces (free) |
| Oarai Park Hotel | Oarai | Villa | 6 guests | From ¥5,775 | Available (for a fee) | Available | 15–20 min by car | 40 spaces (free) |
| Oarai Detached House / Vacation Rental | Oarai | Entire House | 8 guests | From ¥9,802 | − | − | 15–20 min by car | 2 cars |
| Coton Hitachinaka Grand Villa | Hitachinaka | Glamping | 6 people | From ¥14,000 | Available (for a fee) | − | 3-minute drive | 30 spaces (free) |
| Hiraiso Building | Hitachinaka | Ryokan | 8 guests | From ¥13,000 | − | − | 10-minute drive | 20 spaces |
| Hotel New Shiraki | Hitachinaka | Hot Spring Hotel | 6 guests | From ¥8,470 | − | Available | 7-minute drive | 94 spaces (free) |
| Mairin-kan | Oarai | Hot Spring Hotel | 6 guests | From ¥4,345 | − | Available | 15–20 min by car | 50 spaces (paid) |
| Kasuga Hotel | Hitachinaka | Ryokan | 6 guests | From ¥8,800 | − | − | 15-minute drive | Free parking for 60 cars |
| Sakaya Main Store | Oarai | Kappo Ryokan | 6 guests | From ¥8,800 | − | − | 15–20 min by car | Free parking for 30 cars |
| Kuroze Sushi | Hitachinaka | Guesthouse | 6 guests | From ¥7,700 | − | − | 3-minute drive | Free parking for 20 cars |
| Shirahama-so | Oarai | Guesthouse | 6 guests | From ¥9,000 | Available | Available | 15–20 min by car | 15 spaces (free) |
How to Choose Based on Your Needs
If you prioritize privacy → We recommend Hiraiso Garden Villa, Guest House MOANA, and Sunrise Villa Oarai. Since these are entire-house rentals, you can enjoy time exclusively with your group without worrying about your surroundings.
If you want to enjoy BBQs and outdoor activities → Koton Hitachinaka Grand Villa, Oarai Park Hotel (Villa), Hiraiso Garden Villa. These properties feature full-scale grills and extensive BBQ facilities.
If you want to relax in hot springs → Hotel New Seiroki, Mairin-kan, and Oarai Park Hotel. You can soothe your travel fatigue in open-air baths and large communal baths.
If you want to enjoy seafood cuisine → Kasuga Hotel, Sakaya Honten, Kuroze Sushi. These accommodations pride themselves on dishes made with fresh, locally sourced seafood.
If you prefer accommodations near Hitachi Seaside Park → Koton Hitachinaka Grand Villa (3 min by car), Kuroze Sushi (3 min by car), Hotel New Seiroki (7 min by car). Since the park gets crowded during the Nemophila and Kochia seasons, staying near the park is convenient.
If you're looking for great value → Mairin-kan (from ¥4,345), Kuroze Sushi (from ¥7,700), Shirahama-so (from ¥9,000). These options let you stay with a large group at a reasonable price.