[Official] If you are a member, the lowest price & 14 o'clock early check-in included. GRAND MONday Resort TOKYO BAY MAIHAMA

PARADISE on REPEAT

GRAND MONday Resort TOKYO BAY MAIHAMA

Where water and sky set the stage.

A seaside resort you'll never want to leave.

Drift through a lagoon pool open year-round, and indulge in flavors from every corner of the globe.
Wake up to ocean views in a room as relaxing as the sea itself.
The luxury of doing nothing, and the freedom to explore everything.
A seaside retreat you'll want to return to again and again.

TRAVEL
SERVICE

Checkout is
11:00*
365 days a year, all day long
Hotels where you can have fun
All rooms
Oceanfront
Free shuttle bus
Easy access

*This applies to new reservations made on or after August 12, 2026. For customers who made reservations before August 11, 2026, the conditions at the time of reservation will apply.

[Make a reservation on the official website to save money!]

Members get 10% off and check in at 2pm!

Booking through the official website is the best deal!

10% discount
14:00 Early check-in

* Benefits are available from the first time you register.

New member registration

hotel reservation

stay

Confirm/Cancel ReservationNew Member Registration

Accommodation + Flight

Click here for booking confirmation and cancellation instructions for plans that include airfare.

Accommodation + Shinkansen

Reservation confirmation/cancellation

DYNAMIC PACKAGING

FLIGHT

HOTEL

It is finally time toTRAVEL to JAPAN

Confirm/Cancel ReservationNew Member Registration

DYNAMIC PACKAGING

FLIGHT + HOTEL =
It is finally time to TRAVEL to JAPAN

airport

check-in

check out

Number of people

Click here for booking confirmation and cancellation instructions for plans that include airfare.

施設のお知らせ：
エレベーター防犯カメラ工事につきまして
［2026年10月27日(火)］

STAY PLAN

We offer special plans that allow you to enjoy your stay at a great rate.
We have prepared it for you.
This plan includes special benefits exclusively for members.

List of accommodation plans

OUR HOTEL

MAIHAMA
LAGOON

365 days of pool entertainment, transcending seasons.

In the summer, you can play to your heart's content, cool off, and have a lively time; in the winter, you can warm up in the hot pool.
Here you'll find enjoyment that transcends the seasons.

I swim in the pool, eat, rest, and then relax in the barrel sauna.
It's a place where you can spend your time however you like, each time you visit.
Glamorous events and pool entertainment,
We will create special memories that you can only experience here.

RESTAURANT

Enjoy food as if you were traveling the world.

"ISLE -Pool Club Restaurant-(Isle Pool Club Restaurant)
This is an all-day dining restaurant offering cuisine from around the world.

The performances and music change depending on the time of day and season.
It makes your culinary trip even more memorable.
This is a new type of dining restaurant that combines a restaurant and a swimming pool.

VIP LOUNGE

A special space to enjoy time along with the scenery.

The VIP lounge is located on the second floor, oceanfront.
Guests staying in the VIP Oceanfront Suite,
Alternatively, it is available to customers who have booked an eligible plan.
In a tranquil interior overlooking the sea,
Enjoy our wide variety of food and drinks.

ROOMS
[ OCEAN FRONT ]

All rooms are oceanfront.

All 140 guest rooms are oceanfront, offering stunning ocean views.
From the natural modern guest rooms, you can see the ever-changing sea and sky.
You can see Mount Fuji and the sunset sinking below the horizon.
This is a prime seat for all guests.