Hideyoshi and Hidenaga's Mystery Solving Road-Find treasures to sleep in the Asai family! ~

Hotel tour-type mystery historia

A new historical mystery begins in the hotel building that reproduces Kitaoumi.
You become Hidenaga, and together with Hideyoshi and Sakichi Ishida, on a journey to pursue the secret treasures of the Asai family.
Every time you follow clues and unravel the mystery, the culture and signs of the Sengoku rise up in front of you...
Enjoy an immersive mystery solving activity to “walk and taste” history.

※All-inclusive activities included in the room rate, so you can enjoy it at no additional charge.

GARDEN POOL Garden Pool (Summer Only)

Garden Pool| Grand Mercure Lake Biwa Resort & Spa

Time to get drunk with "nothing luxury" unique to resort pool.
It is a garden pool where you can relax while relaxing at the resort while enjoying the nature more enjoyable and comfortable time spent at the hotel.
It can be used all-inclusively, so please use it for your summer family trip!

Pool Overview

Period
July 17 (Friday) - September 27 (Sunday), 2026
Time
9:30~12:30/13:30~18:30
※From 12:30 to 13:30, water cannot be entered due to break time.
Usage Charges (per person)
Guests are included in the accommodation fee.
Notes
・For inspection, we have a 10-minute break every 50 minutes.
・You can use the pool only once per person per night, and you can use it only for one day, either check-in or check-out date.
※It can be used across morning and afternoon breaks.
・At the time of check-in, we will ask you about the scheduled date of use and give you a wristband.
・Be sure to wear a swimsuit.
・Please refrain from swimming only for children under elementary school age who do not have parents or attendants (18 years old or older).
・Please be sure to bring a swimsuit for infants. (A diaper for playing with water is also acceptable)
・It is not available to those who are drinking. In addition, drinks in the lounge are not allowed.
・Please prepare the bath towel by yourself.
・In principle, those who have tattoos and tattoos are not allowed to enter the pool.
However, you can enter the water only if you can hide it by sticking two 8cm x 10cm cover stickers.
・Pool business may be canceled or business hours may be changed depending on weather conditions.
・We are not responsible for accidents or theft in the facility other than emergency treatment, so please be careful when preventing accidents during use and managing valuables.
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GUESTS
Adults
2
Children
0
Age of the first child
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