Iseya at Obama Onsen: Parking, Child Rates and Day-Use Bath (¥1,000), with Half Open-Air Baths in the Rooms (2026)

This article contains advertising (affiliate links).

Parking for Iseya, a ryokan with private open-air baths overlooking the sea at Obama Onsen, is the Unzen City municipal car park across the road (¥250 per car per night), and overnight guests are refunded at the front desk. The rooms in the main building have a half open-air bath with water from the inn’s own spring, flowing freely. Child rates for a stay come in 3 kinds: with bedding, without bedding, and sharing a bed. You can also use the large bath without staying, for ¥1,000 for adults. The address is 905 Kitahonmachi, Obama-cho, Unzen City, Nagasaki, an inn of more than 350 years facing Tachibana Bay.

In short

Parking: the municipal car park across the road, ¥250 per car per night, refunded to overnight guests (1 minute on foot).
Children: ¥11,000 with bedding and 2 meals, ¥3,850 without bedding (2 meals), free when sharing a bed with no meals or bedding.
Day-use bath: adults ¥1,000, 10:00–19:00, no booking needed.
This page does not say whether the staff speak English. Booking forms are on the official site and the booking sites below; check before you go.

Checked with official pages on November 1, 2026 (Japan time).

Parking at Iseya is the municipal car park across the road (refund of ¥250 for guests)

According to the official site, the car park is the Unzen City municipal car park across the road from the front of the inn (1 minute on foot from the inn; 10 large vehicles and 50 standard cars). The fee is ¥250 per car per night, and overnight guests are refunded if they show the receipt at the front desk. People who use only the day-use bath (large bath or family bath) or the terrace cafe also park in the same municipal car park (¥250 per car).

Iseya rooms and room rates (half open-air baths are in the main building), and cancellation fees

The official room pages give prices per person for 1 night with 2 meals when 2 people share a room (tax included). They start from ¥18,150 for the Standard room (39 m²) in the main building, from ¥20,350 for the Junior Suite (51 m²) and from ¥24,200 for the Ocean Suite “Umi kara” (56.5 m²) in the annex. Prices change by season, and booking through the official site takes ¥1,100 per person off. Every room sleeps 2 to 4 people, and for 3 or more, futons are laid out in the Japanese-style room.

The Standard and Junior Suite rooms in the main building have a half open-air bath with water from the inn’s own spring, flowing freely, in the room (with handrails and steps). The annex “Umi kara” is about 4 minutes by car from the main building, and the bath in its rooms is not a hot spring. Guests in the annex can use the main building’s large bath as often as they like during the stay at no charge, and the family bath is ¥2,000 per hour (usually ¥3,000).

Cancellation fees are free up to 7 days before, 20% for 6 to 3 days before, 30% for 2 days before, 50% for the day before, and 100% on the day and for no-shows. You cancel by phone. You can pay in cash or by VISA, JCB and American Express cards, or with iD, QUICPay, PayPay and others. Iseya official site (Japanese)

The waters of Obama Onsen, and dinner and breakfast at Iseya

The official site says the source temperature at Obama Onsen is high, at 105°C, with plenty of water, and that the town is known as the hot spring area with the largest heat release in Japan. The water is a sodium chloride spring, slightly alkaline, a lightly salty spring. Besides the large baths (1 for men and 1 for women), there are in-room baths and family baths (3 places, reservation required, extra charge).

Meals are in the restaurant “Umikaze” or “Nigiwai” in the inn. There is no meal served in the room or in a private room. Dinner starts between 17:00 and 19:00 and breakfast between 7:30 and 8:30, and you decide the start time at check-in. If you cannot make the 19:00 dinner, dinner may be refused. For food allergies, tell them by the day before your stay and they will change the ingredients as far as possible. Iseya hot spring guide (official, Japanese)

See the post on Instagram

Iseya child rates, and the age rule for the large baths

The official FAQ gives 3 ways for a child to stay.

1 night with 2 meals, with bedding: ¥11,000 (tax included)
1 night with 2 meals, without bedding: ¥3,850 (tax included)
Sharing a bed (no meals or bedding): free

The official booking form has no option for “without bedding” or “sharing a bed”, so you do not enter these children in the number of guests and write them in the comment box. If you book by number of children, dinner is a children’s menu such as additive-free dry curry and a plate of side dishes, and breakfast is a Japanese set meal (infants to 6th grade). A child with no meals gets plain rice with furikake. Only baby food can be brought into the restaurant.

For large baths, Article 5 of the Nagasaki Prefecture public bath ordinance restricts mixed bathing of the opposite sex from “about 7 years old”. Pets are not allowed, except guide dogs and hearing dogs.

Check-in at 15:00 and check-out by 10:00 (late check-out ¥3,000 per hour)

Check-in is from 15:00 and check-out is by 10:00. If you will arrive late, call by 17:30 on the day. Late check-out is ¥3,000 per hour (tax included) for up to 2 hours, and you ask for it by check-in. Rooms are not assigned on request as a rule, but if you need consideration for a physical reason, say so in advance. Phone calls are put on hold from 17:30 to 20:30, and the inn calls back later.

Check rates and availability for this inn

Check rates on Rakuten Travel (Ad)Check rates on Jalan (Ad)

Iseya day-use bath (adults ¥1,000, family bath ¥3,000 per hour)

You can use the large bath without staying. According to the official guide, it is open 10:00–19:00 (reception until 18:30), needs no booking, and costs ¥1,000 for adults, ¥500 for elementary school children, and is free for infants (all tax included). Shampoo and similar items and a bath towel and small towel are provided. The family bath is ¥3,000 per group per hour (tax included, reception until 18:00), and you must book in advance.

The lunch and hot spring set “Yukemuri Lunch and Onsen” is ¥6,600 per person (tax included), for 2 people or more, booked by the day before. It runs 11:30–14:30 (last order 14:00), and cancelling on the day costs 100% of the meal price.

How to get to Iseya in Obama Onsen from Fukuoka

The official site gives no route or travel time from Fukuoka. If you drive, park in the municipal car park across the road described above. If you have no car, you can rent one in Fukuoka. [Rakuten Travel] See rental car availability and prices in Fukuoka Prefecture (ad)

For the latest prices, availability and guest reviews, see the Iseya page on Rakuten Travel (ad) and the Iseya page on Jalan (ad).

Address: 905 Kitahonmachi, Obama-cho, Unzen City, Nagasaki · Google Maps · Tel: 0957-74-2121

Official information checked: November 1, 2026 (Japan time). Prices and hours may change.

Sources

3 pages we checked