The following is a list of the most recurring questions from our guests.
Please refer to them before making your inquiry.


Yes. The password is displayed in each room.

No. Ikoisanso is a nonsmoking inn.

Yes. There is a smoking corner just outside the main entrance.

No. The water is pumped in from the aquifer, heated up to the perfect temperature and poured onto medicinal maifan stones.

It’s open from 4 p.m. to 0 a.m. (shower is available from 4 p.m. to 10 a.m.) , except when being reserved for private use.

Unfortunately not. Please tell us in advance and we’ll do our best to meet your needs.

Unfortunately it cannot be used.

Reservations & accommodations

We accept same-day room reservations until 8pm each day.

Cancellation policies may vary depending on the rate or dates of your reservation. Please refer to your reservation confirmation to verify your cancellation policy.

Check-in time is between 3 and 10pm, and check-out is at 10am. The inn’s main entrance is open 24 hours a day.

You can check-in early but may have to wait for the room to be cleaned. Guests arriving early can leave their luggage at the reception desk. For late check-outs, we charge \1500 per hour after 10am.

Each room has a bath towel, bathrobe, face towel, toothbrush and other items for each guest. Those with a private bathroom have a hairdryer, shampoo and other amenities. Guests using a common bathroom may use a hairdryer and amenities provided in our guest bath.

Yes. The inn can be reserved to accommodate groups of up to 70 guests. There’s also plenty of space outside for a barbeque or even a camp fire!


Access & pickup service

You can get here by car, public transportation or by taxi. We are conveniently located just a 10-minute walk from Naka-Karuizawa Station. For details, please refer to the “Access” link on this website.

Yes. We have a free shuttle bus from Naka-Karuizawa Station. Pickup service is available from 10am to 6pm. Please reserve in advance.


We accept all major credit cards and other electronic payment settlement methods.


Dinner is served between 6 and 8pm, and breakfast time is 7:30 to 9am. Please tell us what time you’d like your meals when you check-in.

Unfortunately not, but tell us in advance and we’ll do our best to meet your needs.

Unfortunately not.

Unfortunately not. We do not serve lunch.

Rental and complimentary items

Yes. You can rent a bike for \1000 per hour. We have a limited quantity so book yours in advance.

Yes. You can borrow one of our rubber hot water bottles and mobile phone chargers. Please inquire at the reception desk.


Absolutely. Tatami rooms are great for small kids. One child aged 5 or under can stay for free, but we charge \1500 for two or more kids that age. Children aged 6 and over are charged regular room rates.

Unfortunately not. Kids aged 6 and over are charged regular meal prices.

We have baby futons, kids’ bathrobes, baby bath chairs, diaper disposal bins and more. Quantities are limited so please reserve in advance.


Unfortunately not. Pets are not allowed in guest rooms.

Yes. Massages are \4700 for 40 minutes.

Yes. Please inquire at the reception desk.