Ready to book a hostel? These ones get the highest reviews from our travelers and might be a good place to start looking:
Shiozawa Sanso - Hostel - Property features include free WiFi, free parking, and a restaurant. Rooms come with coffee/tea makers.
Koya Backpackers - Guests can enjoy free WiFi, free parking, and a shared/communal kitchen. Rooms come with free toiletries, hair dryers, and coffee/tea makers.
Kashiwaya Ryokan Guesthouse&Sharedhouse - Guests can enjoy free WiFi, a shared/communal kitchen, and a 24-hour front desk. Rooms come with free toiletries.
Karuizawa Guest House Dorakuso - Hostel - Property features include free WiFi and free parking.
Forestsoul Karuizawa - You can take advantage of free WiFi and free parking, as well as a shared/communal kitchen.