About the property
【Enjoy a Private Hot Spring in Asama Yumoto】
Located about 30 minutes from Karuizawa Station.
Accommodating over 20 guests, bedrooms are designed for two people each to ensure privacy.
Perfect for families, friends, or company retreats.
The spacious living room invites everyone to gather comfortably, while a fully equipped kitchen lets you cook and dine together. Large windows frame the beautiful seasonal views of North Karuizawa.
After your reservation, we’ll send a detailed house guide.
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【Property Details|Large Private Villa in Asama-Yumoto|Entire Villa Rental|Private Onsen Included】
■ Capacity & Overview
・Capacity: Up to 20 guests (21+: please inquire via message; may be accommodated)
・Total floor area: Approx. 600 sqm / 6,458 sqft
・Type: Entire villa rental / Private villa / Large group accommodation
・Location: Asama-Yumoto, Tsumagoi Village, Gunma Prefecture, Japan
・Area: North Karuizawa / Karuizawa region / Mt. Asama foothills
■ Private Onsen (Hot Spring, 24h Access)
Authentic natural hot spring water sourced directly from the Asama-Yumoto spring, available exclusively for your group throughout your entire stay—any time, day or night.
・Water type: Sodium sulfate, bicarbonate, chloride springs
・Traditional benefits: Relief for nerve pain, muscle soreness, joint pain, frozen shoulder, poor circulation, fatigue recovery, and chronic gynecological conditions
・Separate men's and women's baths—ideal for large groups bathing simultaneously
・Perfect for onsen lovers, family hot spring trips, couple retreats, and wellness stays
■ Beds & Bedding
・Beds: 3 total (2 single, 1 double)
・Futons: 16 single-size Japanese futons
・Sleeps up to 20 guests comfortably
■ Bedroom Layout (5 Private Units)
The villa is divided into 5 private units, each featuring its own washbasin, toilet, and kitchenette—ideal for families or sub-groups who value their own space within a shared villa.
・Unit 201: Bedrooms 1 & 2 / with bathroom
・Unit 202: Bedrooms 3 & 4
・Unit 203: Bedrooms 5 & 6
・Unit 204: Bedroom 7
・Unit 205: Bedrooms 8 & 9 / with bathroom
Perfect for multi-generational family trips, multi-family getaways, corporate breakout groups, and seminar sub-teams.
■ Living Room & Full Kitchen
Spacious shared living room with panoramic windows showcasing North Karuizawa's stunning four-season scenery. Full kitchen with appliances—bring your own ingredients for group cooking, home-style parties, or special-occasion dinners. Large dining table seats the whole group.
■ Amenities
・Wi-Fi throughout (2nd floor signal may be weak—living room recommended for best connection)
・Full central air conditioning & heating
・Towels, toiletries, basic amenities
・Washer & dryer
・Free on-site parking (multiple vehicles welcome)
■ Access
・Approx. 30 min by car from JR Karuizawa Station
・Approx. 15 min by car from Manza-Kazawaguchi Station
・Approx. 50 min from Usui-Karuizawa IC (Joshinetsu Expressway)
・Approx. 80 min from Shibukawa-Ikaho IC (Kan-Etsu Expressway)
・Free parking included
■ Nearby Attractions & Activities
・Hot spring destinations: Manza Onsen, Kusatsu Onsen, Kazawa Onsen, Kita-Karuizawa Onsen
・Sightseeing: Oniishidashi-en Park, Mt. Asama, Shiraito Falls, Karuizawa Prince Shopping Plaza, Harunire Terrace
・Ski resorts: Palcall Tsumagoi, Manza Onsen Ski Resort, Kazawa Snow Area (winter)
・Events: Tsumagoi Kogen Cabbage Marathon (July), multiple highland golf courses
・Outdoor: Hiking, cycling, fishing, camping, BBQ
■ Seasonal Highlights
・Spring: Fresh greenery, mountain vegetables, crisp highland air, cherry blossoms
・Summer: 5-8°C cooler than Tokyo—ideal summer escape, workation, family holidays, Obon gatherings
・Autumn: Asama foothill autumn foliage, blueberry & mushroom picking, hiking
・Winter: Skiing, snowboarding, onsen hopping, New Year family gatherings
■ Perfect For
・Multi-generational family trips, big family gatherings (Obon, New Year)
・Friend group vacations, birthday/anniversary celebrations, milestone parties
・Corporate retreats, offsite meetings, team building, leadership offsites, kickoff events
・Employee trips, year-end & new-year company parties
・University seminar camps, club training camps, sports team training
・Wedding-related group stays, pre-wedding photo shoots, after-parties, family rooms
・Workation, remote work retreats, creator retreats
・Inbound tourist groups, VIP entertainment, international visitor hosting
■ After-Booking Support
Once your booking is confirmed, we'll send a comprehensive house guide with detailed directions, appliance instructions, and local recommendations. Even first-time visitors can stay with total peace of mind—we support you from arrival to departure.