To get a clear picture of which international cities have the cleanest and dirtiest hotels, Homeaglow, a home-cleaning booking platform, analyzed the cleanliness ratings on over 18 million reviews (on sites such as TripAdvisor) across 20,000 properties in the world’s top 100 city destinations.

Global key findings include:

• Hotels in Palma de Mallorca, Spain, are the cleanest, while hotels in Johor Bahru, Malaysia, have the lowest average cleanliness scores, according to reviewers.
• Five-star hotels in Vancouver; Vienna; Heraklion, Greece; and Tallinn, Estronia, are the cleanest overall, with reviewers giving them an average 4.9-star rating.
• In Tbilisi in the country of Georgia, five-star hotels are rated lower for cleanliness than non-five-star hotels. This is the only city where luxury five-star hotels are rated as less clean than four-star or lower hotels.
• In the U.S., Washington, D.C., hotels are rated the cleanest, while those in Honolulu are rated the filthiest.

In North America overall, Washington, D.C., has the cleanest hotels on average, scoring 4.51 out of five, slightly higher than second-place New York City (4.49). In comparison, Honolulu has the dirtiest hotels in the U.S., with hotels in Hawaii’s capital rated just 4.03 out of five on average. Behind Honolulu, Cancún, and Las Vegas were found to be the lowest-ranked North American destinations for hotel cleanliness. 

On the European stage, average cleanliness scores ranked hotels in Brussels as the second dirtiest, scoring only slightly better than Europe’s bottom-ranked city, Marne-La-Vallée, France. In fact, Homeaglow found that average cleanliness scores put Amsterdam; Frankfurt, Germany; and Milan in the bottom five cities in Europe.

In Asia and the Middle East, results showed that hotels in Tel Aviv, Israel, are the highest-rated, followed closely by those in Hanoi, Vietnam, and Abu Dhabi, United Arab Emirates. At the other end of the scale is Johor Bahru, Malaysia, which was found to be the lowest-rated city destination for hotel cleanliness.

North America Hotel Cleanliness Table

Last week, the International Organization for Standardization (ISO) unveiled the long-awaited ISO Net Zero Aligned Organizations Standard (ISO 14060), the world’s first international independently verifiable standard designed to support organizations in developing credible and comprehensive net zero transition plans.

The draft international standard is being made available for a 12-week public consultation period to ISO’s national members in more than 170 countries, to establish national consensus positions by early September.

The launch marks a major milestone following almost two years of international negotiations involving hundreds of experts from business, government, academia, civil society, and standards bodies worldwide.

The international working group developing the standard has been one of the largest in ISO’s history, reflecting strong global interest in a consistent international approach. The draft international standard is intended to provide globally consistent guidance for organizations navigating the transition to net zero and helps support holistic business model transformations.

Over 130 countries, including China, India, and the European Union, are committed to cut emissions down to zero. As climate action moves from ambition to implementation and markets grapple with energy security shocks, organizations are facing growing pressure to strengthen their business models and supply chain resilience and to manage climate-related risks. Transition plans are the vehicle to do so at the organizational level, and to turn net zero targets into credible and verifiable action.

The draft international standard provides guidance to support organizations in adapting business models for the global transition to net zero, while strengthening resilience to supply chain disruption, market volatility, and evolving investor and regulatory expectations. It also supports organizations prioritizing energy security, managing emissions reductions pathways, and integrating transition planning into broader business strategy.

The development of ISO 14060 builds on the ISO Net Zero Guidelines launched in 2022 and responds to growing demand from businesses, policymakers, and investors for internationally harmonized approaches to transition planning and climate resilience.

International Standards underpin most of global trade. ISO says the proposed standard is intended to help organizations simplify and scale credible climate action by translating emerging best practice into an internationally agreed and independently verifiable framework.