
Green Key is an international sustainability certification programme for tourism establishments. The certificate is awarded to establishments that have been assessed against Green Key’s published criteria, developed by the Foundation for Environmental Education (FEE), covering areas including environmental practices, social responsibility, sustainability education and operational management. More information about the programme: www.greenkey.global
Grand Hotel Millennium Sofia is honored to have been certified with the Green Key since September 2026.
Grand Hotel Millennium Sofia recognizes its responsibility to the environment, society, its employees, guests, and the local economy.
As part of our long-term commitment to Green key and sustainable development, we adopt this Sustainability and Corporate Social Responsibility (CSR) Policy as the core framework for managing our environmental, social, and economic impact.
Our ambition is to develop and operate the hotel in a responsible manner that creates value for our business, society, and the environment—going beyond minimum legal requirements and fostering continuous improvement.
Environmental Commitment
The hotel is committed to minimizing its environmental impact through the following actions:
Efficient Use of Resources
Circular Economy Principles
Pollution Control
Carbon Footprint Reduction
Social Responsibility
The hotel is committed to fostering a safe, fair, and inclusive working environment.
Labor Rights
The hotel does not tolerate discrimination based on:
Safe Working Environment
Protection Against Exploitation and Abuse
The hotel maintains a zero-tolerance policy towards:
Ethical Governance
Ethical Management and Anti-Corruption
The hotel is committed to transparency, integrity, and ethical business practices through:
Risk and Crisis Management
The hotel maintains a comprehensive risk management system, which includes:
Support for the Local Community and Economy
The hotel aims to contribute to the development of the local community by:
Training and Awareness
The hotel provides regular training to employees on:
Engagement in Sustainable Tourism
The hotel supports the development of sustainable tourism at a local level through:
Monitoring and Continuous Improvement
Hotel management is committed to:
We take part in initiatives and activities that raise awareness of sustainable development and support partners that share our green values. (Ex: Training of staff how to be green; green idea of the month; cleaning initiatives – clean Vitosha mountain team).