Centara Hotels & Resorts, Thailand’s leading hotel operator, announced its approval for certification by Vireo SRL, a GSTC (Global Sustainable Tourism Council) - Accredited certification body, for meeting global standards for sustainable travel and tourism known as GSTC criteria. This certification represents a major milestone in Centara's ongoing commitment to sustainability.The Centara Hotels & Resorts corporate office and 12 hotels are currently approved for certification, and the organisation is continuing to work toward its long-term goal of achieving full certification by 2025. The 12 hotels which are recognised for meeting the GSTC Criteria are: