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Making sustainability measurable

Sustainability in travel is no longer a differentiator. It’s an expectation. But expectations alone don’t build trust, transparency does.

Turning efforts into something credible

The certification program GreenSign Hotel helps hotel groups and individual hotels turn their sustainability efforts into something credible, valuable and comparable.

Not just a promise, but an internationally recognized standard travelers, partners and investors can rely on. Once certified against the standard GreenSign Hotel, sustainability efforts of the hotel become visible on the most relevant platforms as a trusted label across the global hotel landscape.

Why structured data matters now

As the business travel sector as well as the leisure travel sector continuously moves toward more conscious travel decisions, structured and verified data becomes essential.

It’s what allows sustainability efforts to be presented in a compliant way across every booking channel.

From certification to distribution

Through the partnership, GreenSign Hotel certification data is now continuously integrated into GIATA Multicodes, providing a structured, up-to-date and system-ready foundation for distribution across OTAs and booking platforms.

It further increases visibility at the point of decision and gives certified hotels a concrete lever to push for the display of their sustainability credentials.

Better data. Better travel.

At GIATA, we believe better data creates better travel. Supporting partners like GreenSign Institut is one way we help move the industry forward, with more transparency, more precision, and more confidence for everyone involved.

GIATA invests in “The 101 Besten” – Thomas Maechler appointed CEO

Carsten K. Rath and David Rath, founders of the Institute for Service and Leadership Excellence AG (ISLE AG), are welcoming Berlin-based travel tech company GIATA GmbH as a strategic investor. ISLE AG is the parent company of the renowned hotel ranking “The 101 Besten”.

GIATA is a leading provider of hotel data and content solutions for the global travel and hospitality industry. It is joining ISLE AG as a strategic partner. At the same time, Carsten K. Rath will step back from operational management, handing over CEO responsibilities to Thomas Maechler as of February 1, 2026. Rath will continue to support the company as Chairman.


Berlingen/Berlin, Januar6 16, 2026 – The success story of ISLE AG, the company behind the established hotel ranking “The 101 Besten”, is entering a new phase. GIATA Group is joining as a strategic partner and investor. This marks a significant step in the digital evolution of the brand. While “The 101 Besten” has traditionally focused on publishing and events, its offering will now expand into digital formats. Moreover, the brand will scale internationally. The goal is to grow beyond the DACH region and unlock new target audiences and markets across the global hospitality industry.

“GIATA operates one of the most comprehensive hotel databases worldwide and is deeply rooted both in the DACH region and in key global source markets. This creates an opportunity for greater visibility and international relevance across the hospitality industry,” says Carsten K. Rath. Rath will remain closely involved as the Chairman of “The 101 Besten”, supporting its continued expansion.

Thomas Maechler appointed CEO – full team remains in place

As part of GIATA’s investment, Carsten K. Rath will hand over operational leadership to Thomas Maechler on February 1, 2026. The Swiss national will assume the role of CEO and join the Board of Directors. Mathis Boldt, CEO of GIATA Group, will take over as Chairman of the Board.

“I hired Thomas Maechler in September 2025 and was able to bring him on board. He is the ideal choice for this role,” says Carsten K. Rath.

Maechler brings decades of international experience in luxury hospitality. After graduating from the École hôtelière de Lausanne and gaining experience at The Peninsula Hong Kong, he moved to New York in 1996, where he worked at Four Seasons The Pierre and Swissôtel The Drake. Back in Switzerland, he worked as a consultant for the Swiss Society for Hotel Credit (SGH) before becoming General Manager and later owner of the Beau-Rivage Hôtel Neuchâtel. He has also been a member of Relais & Châteaux and served as Board Member and Vice President of Swiss Deluxe Hotels. Maechler is widely regarded as one of the most well-connected professionals in the industry.

“I am excited by the opportunity to build on the success of Carsten K. Rath, his son David, and their team, while bringing new momentum together with GIATA. We aim to further internationalize ‘The 101 Besten’ create new digital growth opportunities for hoteliers, and deliver additional value,” says Thomas Maechler.

Johanna Seiler, a long-standing operational leader of “The 101 Besten” will continue to lead the team as COO.

“Johanna Seiler’s work is an integral part of the success of ‘The 101 Besten’. It was important to us that the entire team remains in place. This continuity is a strong signal of stability and ensures a professional transition,” adds David Rath.

Combining objective methodology with technological excellence


With GIATA’s strategic investment, a unique combination of objective ranking methodology and technological excellence is being created on a global scale. Awarded hotels benefit from fair, independent visibility, especially in the luxury segment. Here, global reputation is essential.


“A credible ranking builds trust and visibility among potential guests and has a measurable impact on demand and bookings, both directly on hotel websites and through AI-driven and indirect distribution channels. Together, we are laying the foundation for a global benchmark that opens new growth opportunities for hoteliers. At the same time, we are providing transparency for travellers. With ‘The 101 Besten’ we are already developing international rankings and data-driven formats that will set new standards in the travel industry.” says Mathis Boldt, CEO of GIATA Group and adds: “My sincere thanks go to Carsten K. Rath and his son David for their trust and close collaboration since summer 2025. What they have built over the years is truly impressive. I look forward to shaping the future together with Carsten K. Rath, and Johanna Seiler. We aim to establish ‘The 101 Besten’ on a global scale.”

Two Years Running

Some industry awards mark a milestone. This one confirms a movement. For the second consecutive year, GIATA Drive has been named the #1 Listings Management Solution at the 2026 HotelTechAwards by HotelTechReport — the most trusted benchmark in global hotel technology software. In fact, it’s back-to-back. This was verified by real users. And it’s more relevant than ever.

What the HotelTechAwards actually measure

Often called “the Grammys of hotel tech,” the HotelTechAwards aren’t decided by a panel or a popularity vote. Rankings are based on verified reviews from hotel professionals worldwide. They are also weighted alongside integration performance, customer support quality, and overall market presence.
That makes this recognition meaningful in a specific way: it comes directly from the people using hotel technology to run their business every day.

Why hotel content management has never mattered more

The pressure on hotel distribution teams has shifted.
Travelers no longer search in straight lines. AI-powered search, metasearch platforms, and OTA algorithms are pulling hotel data from hundreds of sources simultaneously. Inconsistent or outdated content gets filtered out before a traveler ever sees it.
For most hotels, the core challenge isn’t visibility. Instead, it’s consistency at scale.
Managing hotel listings across 500+ distribution channels — each with its own format, image requirements, and content standards — is time-consuming, error-prone, and difficult to maintain without the right infrastructure. As a result, there is fragmented data, reduced trust, and lost bookings.

How GIATA Drive turns hotel data into a distribution advantage

GIATA Drive was built around a single principle: your hotel content should work harder, not your team.
By centralising hotel information in one source of truth, GIATA Drive enables properties and hotel chains to distribute accurate, up-to-date content across their entire channel mix. This happens automatically, consistently, and at scale.


For hotel revenue and distribution teams, that means:

The infrastructure behind modern hotel distribution

Since 1996, GIATA has been a foundational layer of global travel technology — connecting hotels, OTAs, tour operators, bed banks, and GDS providers through verified hotel data and the GIATA ID, the global standard for hotel mapping and content consistency.
As AI reshapes how travellers discover and book hotels, the role of structured hotel data is expanding. GIATA Drive is designed for exactly that shift. It gives hotels the data infrastructure to not just manage their content, but also activate it across every channel where it matters.
Because in travel distribution, the hotels that win aren’t just the ones with the best product.
They’re the ones whose data shows up — accurately, everywhere, every time.

About Hotel Tech Report HotelTechReport is the global authority in hotel technology, trusted by more than 1.8 million hospitality software buyers annually. The platform helps hotel professionals make smarter technology decisions through verified reviews, expert analysis, and data-driven product comparisons.

Berlin, 5 May 2025 – GIATA, the global leader in travel technology solutions, is pleased to announce its strategic partnership with EHTL Viagens, one of Brazil’s leading tour operators specializing in corporate and leisure travel. This cooperation brings the integration of GIATA’s Multicodes and Multilingual Hotel Guide into EHTL Viagens’ digital platform, ensuring accurate hotel inventory management and enhanced multilingual content delivery.

EHTL Viagens manages an extensive portfolio of over 5,000 hotels in Brazil and more than 200,000 globally. The integration of GIATA’s Multicodes will synchronize hotel data from multiple suppliers, making its inventory across all distribution channels consistent and accurate. This advanced mapping solution deletes duplicate entries, reduces booking errors, and enhances the search and booking experience for customers.

Moreover, to support its international expansion goals, EHTL Viagens has chosen Multilingual Hotel Guide, which provides high-quality, accurate, and consistently translated hotel content in 25 languages. This strategic move will boost user experiences for non-Portuguese-speaking travelers, boosting international bookings and strengthening its competitive edge in both corporate and leisure travel segments.

This partnership aligns with EHTL Viagens’ strategic vision of digital transformation and international growth, remarking its position as a market leader in the travel industry.

Gustavo Nappo, International Product Manager at EHTL Viagens

At GIATA, we are dedicated to equipping international players like EHTL Viagens with the tools they need to thrive in today’s fast-paced travel market. Our Multicodes and Multilingual Hotel Guide solutions exemplify our commitment to precision, efficiency, and superior user experiences. Together, we’re setting new standards for what travelers can expect when planning their journeys.

Mathis Boldt, CEO at GIATA GmbH

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