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"Every stay is a step toward a sustainable future."

Green Key (GK) is a premier international environmental certification awarded to over 8,500 facilities across more than 90 countries.
Beyond simple environmental protection, it is a definitive testament to world-class hospitality—
proving that a stay can be both "kind to the planet" and "exceptionally comfortable for guests."

To be the choice of the world’s evolving travelers and to move forward with pride alongside local communities,
we are updating the quality of Japanese tourism.
Here, we unveil the "Good Practices" from across Japan—stories of turning ideals into reality.

▼ Learn more about Green Key here ▼

Green Key Good Practice in Japan

[Certified Facility Introduction] HOTEL THE FLAG Shinsaibashi: Achieving “Zero Plastic Bottles” Through Cross‑Department Collaboration and Turning On‑Site Insights Into Environmental Improvements

  1.施設概要 大阪・心斎橋の中心部に位置する「HOTEL THE […]

[Certified Facility Introduction] Mercure Kyoto Station: Data‑Driven Resource Reduction and Food‑Loss Measures Enabled by Guest Analysis

1.施設概要 京都駅から徒歩8分に位置する「メルキュール京都ステーション」は、全 […]

[Certified Facility Introduction] Aloft Osaka Dojima: Optimizing Water Pressure and Developing “Multi‑Skilled Champions” to Support a Lean Team

  1.  施設概要 大阪の堂島エリアに位置し、遊び心あふれるデザイン […]

[Certified Facility Introduction] Mercure Sapporo: Regional Partnerships and Advanced Food‑Loss Measures Driving a Zero‑Waste Future from Northern Japan   

1.施設概要 北海道最大の歓楽街・すすきのに位置する「メルキュール札幌」は、全2 [...]

[Certified Facility Introduction] ibis Styles Kyoto Station: Achieving Both Environmental Protection and Profitability Through Rigorous Eco‑Cleaning

1. 施設概要:京都の玄関口で、少数精鋭のチームが挑むサステナビリティ 京都駅八 […]

[Certified Facility Introduction] The Ritz‑Carlton, Osaka: Integrating Timeless Hospitality with Environmental Standards Through Organization‑Wide Awareness  

  1.施設概要 JR大阪駅から地下道直結という至便な立地に位置する「 […]

[Certified Facility Introduction] Moxy Tokyo Kinshicho: Community‑Driven Sustainability Blending Playful Brand Identity with Edo Tradition

1. 施設概要 東京・錦糸町に位置する「モクシー東京錦糸町」は、マリオット・グル […]

[Certified Facility Introduction] Courtyard by Marriott Fukui | A Sustainable Hotel Model from Hokuriku, Advancing Waste Reduction and Regional Circularity

1. 施設概要 福井駅から徒歩2分、地上28階の複合ビル上層階に位置する「コート […]

【Introduction of Certified Facility】Sheraton Kagoshima: Achieving “7 Million Yen Annual Electricity Savings” Through Technical Expertise and Promoting Local Gastronomy for Regional Coexistence

    1.施設概要 鹿児島市の新たなランドマークとして誕生した「シェ […]

【Certified Facility Introduction】 ibis Osaka Umeda: Turning Urban Hotel Constraints into Strengths for “Community Coexistence”

施設概要 大阪駅から徒歩10分、地下道直結という利便性を誇る「イビス大阪梅田」。 […]

【Certified Facility Introduction】 Aloft Tokyo Ginza: How Community Activities Sparked a “Shift in Mindset” Leading to Over 10,000 kg of Annual Plastic Reduction 

  施設概要 銀座の活気あふれるエリアに位置し、ルーフトップバーなど洗練された空 […]

【Certified Facility Introduction】 The Westin Osaka: Innovative Device Implementation and a “Playful Mindset” Driving Cultural Transformation in a Nature‑Rich Environment 

  1.施設概要 大阪駅から徒歩圏内の新梅田シティに位置する「ウェステ […]

【Certified Facility Introduction】 Hotel Anteroom Naha: An Art Hub Driving Bamboo Amenity Circulation and Achieving Multi‑Million‑Yen Cost Reductions

1. 施設概要 沖縄県那覇市に位置し、“アート&カルチャー”をコンセプトとする「 […]