A 300-room five-star hotel consumes, in a typical operating year, the energy equivalent of approximately 80 standard residential homes, generates 400–600 tonnes of laundry requiring industrial-scale water consumption, produces several hundred tonnes of food waste, and operates a fleet of vehicles responsible for significant local air quality impact. These facts are not comfortable for an industry whose primary product is pleasure and whose marketing language tends toward the pastoral and the natural, and they explain the extraordinary growth of sustainability claims in luxury hotel marketing over the past decade — claims that range from the genuinely impressive to the transparently superficial.

The properties that are taking environmental responsibility most seriously share several characteristics. They have appointed dedicated sustainability directors with genuine authority rather than merely adding environmental responsibilities to an existing operational role. They have set targets — typically aligned with the Science Based Targets initiative's net-zero framework or with the UN Sustainable Development Goals — that are specific, measurable, and subject to independent verification rather than self-assessment. And they have been willing to make operational changes that impose genuine costs: investing in renewable energy infrastructure (solar installations, ground-source heat pumps, wind purchase agreements) that increases the capital cost of the property; reforming the food and beverage supply chain (sourcing locally and seasonally, reducing red meat on menus, implementing food waste measurement and reduction programmes) that requires supplier relationships to be rebuilt; and reducing the single-use plastics that were standard in luxury hospitality (bathroom amenity bottles, water bottles, straws, packaging) through investment in alternatives that require more complex logistics.

Among the properties that have made the most credible progress, Soneva — the private island resort group whose Soneva Fushi in the Maldives and Soneva Kiri in Thailand operate at the ultra-luxury tier — stands out for the depth and longevity of its commitment. Sonu Shivdasani, the group's founder, has been genuinely unusual in the luxury hotel industry for his willingness to discuss the tension between the carbon footprint of long-haul travel to remote island destinations and the environmental values his properties express. Soneva offsets 200 percent of the emissions from its guests' flights to its properties — paying twice the cost of carbon offsets rather than once — through a programme that funds solar installations in Maldivian island communities and mangrove restoration across the archipelago. Whether carbon offsetting is an adequate response to the underlying challenge of long-haul tourism is a legitimate question; the seriousness with which Soneva has engaged with it is not in doubt.