Experience a Refreshing Summer in a Blue-Drenched Room: Lotte City Hotel Kinshicho Launches Limited-Time 'Summer Coolish & Sō Room' Featuring Hoshimachi Suisei and Hatsune Miku

Interior design of the limited-time 'Summer Coolish & Sō Room' (Image)

Lotte City Hotel Kinshicho (located at 4-6-1 Kinshicho, Sumida-ku, Tokyo; General Manager: Tomoya Fukui) will begin limited sales on Friday, July 3, 2026, of the accommodation plan 'Summer Coolish & Sō Room – Hoshimachi Suisei × Hatsune Miku Collaboration ~A Cold, Blue Summer Has Arrived.~ (with breakfast)', in collaboration with Lotte Corporation's (headquartered in Shinjuku-ku, Tokyo; President and CEO: Hideki Nakashima) 'drinkable ice' brand 'Coolish' and the fine-ice-textured, refreshing 'Sō'. The plan is available for stays from Sunday, July 5, 2026, to Sunday, September 27, 2026.

Amid increasingly intense summer heat, Lotte City Hotel Kinshicho launched this initiative with the goal of offering guests a cool and comfortable summer experience. Guests can enjoy a unique, out-of-the-ordinary hotel stay in rooms overlooking Tokyo Skytree®, enhanced by cool blue-themed decor and the refreshing taste of 'Coolish' and 'Sō' served from a dedicated in-room freezer.

This marks the third collaboration with 'Coolish', with 'Sō' newly added this year. The room design recreates the world of Lotte Corporation’s new joint TV commercial for both brands, titled 'A Cold, Blue Summer Has Arrived.', capturing its key visual theme of 'blue'. Guests can enjoy the 'cold and blue summer' atmosphere alongside Hoshimachi Suisei and Hatsune Miku, who star in the commercial.

Guest Rooms Immersed in the World of the New CM 'A Cold, Blue Summer Has Arrived.'

The setting for this campaign is the Standard Tower View Twin room, offering views of Tokyo Skytree®. The entire room is adorned in the signature 'blue' color from the new TV commercial, creating an extraordinary space that instantly envelops guests in a cool, crystalline blue world upon entry. Combined with the scenic view outside, it offers a refreshing hotel stay that lets guests momentarily forget the summer heat.

To enhance photo opportunities within the room, special installations reflecting the collaboration’s theme have been prepared. Paper monuments shaped like 'Coolish' and 'Sō', as well as 'Coolish Cushions' and 'Sō Cushions', decorate the space.

'Summer Coolish & Sō Room' (Image)

Enjoy 'Coolish' and 'Sō' from the Room's Dedicated Freezer

A unique highlight of this room is the 'Coolish & Sō Dedicated Freezer' installed inside. During their stay, guests can exclusively enjoy a total of 10 items—various flavors of 'Coolish' and 'Sō'. The 'drinkable ice' 'Coolish', with its clean sweetness and chill, and 'Sō', with its pleasant, crunchy fine-ice texture, offer refreshing relief to bodies heated by summer's intense heat.

Additionally, guests can watch a special collaboration movie featuring Hoshimachi Suisei and Hatsune Miku on the in-room TV, allowing them to immerse themselves in the CM’s world while relaxing.

※ Contents of the dedicated freezer: 10 items total (1 of each variety per room).

※ Flavors of Coolish and Sō may change depending on the season.

Coolish & Sō Dedicated Freezer (Image)

A dedicated freezer with 10 Coolish and Sō treats, allowing guests to fully enjoy the themed experience while indulging in ice cream

Exclusive Stay Perks Including 'Hotel Original Room Key' Featuring Hoshimachi Suisei and Hatsune Miku

Guests will receive exclusive collaboration-only perks available nowhere else. As a room key, they will receive a 'Hotel Original Room Key' featuring the collaboration’s design, which they can keep as a souvenir. Additionally, 'Original Stickers' will be given as a memento of the trip.

'Hotel Original Room Key' and 'Original Stickers' featuring Coolish and Sō (Image)

Also provided are the 'Coolish-Shaped Cooling Pack', allowing guests to carry coolness with them when going out, and the 'Kurisshi-Yu Bath Salts' to add a refreshing touch to bath time. Guests can enjoy the lingering atmosphere of a 'cold, blue summer' not only during their stay but also after returning home.

※ Limited perks are provided two of each per room.

※ Paper monuments and cushions are in-room amenities for enjoyment and are not available for take-home.

'Coolish-Shaped Cooling Pack' and 'Kurisshi-Yu Bath Salts'

Accommodation Plan Details

Plan Name

Summer Coolish & Sō Room – Hoshimachi Suisei × Hatsune Miku Collaboration ~A Cold, Blue Summer Has Arrived.~ (with breakfast)

Room Type

Skytree-View Twin Room

Capacity

Up to 2 guests

Check-in

3:00 PM

Check-out

11:00 AM

Guest Perks

- 6 types of 'Coolish', 4 types of 'Sō' (10 items total per room)

- 'Hotel Original Room Key' (2 per room)

- 'Original Sticker' (1 of each type per room / 2 total)

- 'Kurisshi-Yu Bath Salts' (2 per room)

- 'Coolish-Shaped Cooling Pack' (2 per room)

Stay Period

July 5, 2026 (Sun) – September 27, 2026 (Sun)

Reservations

https://go-lottecityhotel.reservation.jp/ja/plans/10196478?adults=2

About Lotte's 'Coolish' and 'Sō'

'Coolish' is a 'drinkable ice' that offers a refreshing, clean sweetness and chill, perfect for enjoying anytime, anywhere. 'Sō' features fine ice crystals delivering smooth vanilla flavor with a refreshing aftertaste, ideal for moments when you want to refresh. With this first joint CM campaign, Lotte aims to strengthen the presence of these two flagship ice brands, 'Coolish' and 'Sō', as companions for more people’s summer moments through coolness and sweetness.

<Official CM Website URL>

https://www.lotte.co.jp/products/brand/coolish/soh-coolish

Profile List

Hoshimachi Suisei

A virtual idol who continues to make waves in the music scene with her powerful vocal presence. In 2021, she released her first album 'Still Still Stellar', featuring her signature song 'Stellar Stellar', which debuted at No. 1 on both the Billboard JAPAN Download Albums and Oricon Weekly Digital Album charts, achieving a double crown. Her 2024 release 'Bibideba' went viral globally, primarily through social media, becoming the first VTuber to surpass 100 million YouTube views and 100 million cumulative streams on Billboard JAPAN. Her music video won a Bronze Award at 'Clio Music 2025', one of the world’s top three advertising awards, earning international acclaim in visual storytelling. In 2024, she launched her first multi-city tour across Saitama, Osaka, and Fukuoka, starting at Saitama Super Arena. In January 2025, she released her third full album 'Shinsei Mokuroku', and on iTu