You can check that on the following web page:
＞For Those Coming by Car

You can use the shuttle buses from Hotel Universal Port (Universal Studios Japan) and OCAT (Osaka City Air Terminal) to Art Hotel Osaka Bay Tower. For the shuttle bus schedule, please click the following link.
＞Free Shuttle Buses

You can pay by cash, credit card, Alipay, or WeChat Pay.
Credit cards accepted: Visa, MasterCard, JCB, AMEX, Diners, Discover, UnionPay.
* The automatic payment machines do not accept Discover or UnionPay.

There are none inside Solaniwa Onsen, but there are Kansai Mirai Bank ATMs on the 1st floor of Osaka Bay Tower East, and an ATM in the Family Mart Minato Benten ORC Branch on the 2nd floor of Osaka Bay Tower West.

Strollers are not allowed in the facility to ensure that guests are barefoot. Please use the free lockable storage area.

Yes. Solaniwa Onsen has wheelchairs available for use inside the facility. We also have wheelchair-friendly Family Baths (paid) available, so please feel free to take advantage of this service.
＞For more information on reservable outdoor baths

Coin-operated lockers and an in-facility safekeeping service are available. (Requires a fee)

User Guide
(Tax included)

◆ Coin-operated lockers in Solaniwa Onsen (Requires a fee)
11:00am～11:00pm
2F Main Entrance Hall
size: W34×D57.5×H84cm　
¥600 / per unit
20 units in total

◆ In-facility safekeeping service (Requires a fee)　
11:00am～11:00pm
2F Front Desk
170×80×80cm or less in size, 20kg or less in weight
¥770 / per luggage
(There is no limit to the number.)

◆ Lockers in Solaniwa Onsen in dressing rooms
11:00am～11:00pm
2F　dressing room W50×D28×H85cm
5F　dressing room W50×D44×H42cm
*The fee is included in the entrance fee.

◆ Coin-operated lockers outside the entrance
Available 24 hours a day
Ｓ: 34×35cm　¥200 / per unit 　14 units in total
Ｍ: 51×35cm　¥300 / per unit 　9 units in total
Ｌ: 87×35cm　¥500 / per unit 　9 units in total

As a general rule, we do not allow those with tattoos or other kinds of body art (Japanese irezumi, body painting, etc.) into our facility.
* However, in consideration of the recent societal demand and foreign cultures and customs, we have implemented a tattoo-concealling sticker system. If your tattoos are fully covered up by stickers sold by Solaniwa Onsen, you may enter our facility and use the baths.
*Effective December 1, 2023, there is no longer be a limit on the number of stickers.

Parties consisting entirely of children under 13 will not be allowed entry. For parties consisting only of minors above that age,those under the age of 16 must check out by 7:00 pm, and those under 18 by 10:00 pm, as required by law.

The bathing tax is a tax levied on users of hot spring baths. It is set by the Osaka municipal government.
It is applied to adults whose entry fee is ¥1,501 or more. It is not applied to children who have yet to graduate elementary school or to the Morning Bath fee.

The main bathing area has shampoo, conditioner, and body soap, facial foam, skin lotion,and milky lotion. You can also use items you bring in yourself.

We have bath towels and hand towels available for guests to use.

Yukata robes (for wearing inside the facilities), bath towels, hand towels, shampoo, conditioner, body soap, cotton swabs, toothbrushes, combs, razors, lotion, emulsions, and cotton puffs (for women only) are available.

Men’s come in S, M, L, LL, 3L, 4L, and 5L, while women’s come in S, M, L, 2L, and 3LY.

Due to public regulations, we do not, as a general rule, allow food and drink from outside. However, those with food allergies or with infants who can only eat baby food shall be allowed to bring food in as an exceptional case.

There are 2 smoking areas in Solaniwa Onsen.
One is beside Solaniwa Temple on the 2nd floor, and the other beside Uoshu-ya Fish Therapy on the 4th floor.