Wolfgang Greiner appointed CEO of ISLE AG, leading hotel ranking platform

Wolfgang Greiner, a 58‑year‑old veteran of luxury hospitality, will assume the role of executive board member and chief executive officer of the Institute for Service‑ and Leadership Excellence AG (ISLE AG) on 1 October 2026. Greiner brings decades of experience from senior positions at Althoff Hotels, MHP Hotel AG, the Mandarin Oriental in Munich, and as director of Schloss Fuschl, among others, and has managed properties in Germany, Austria, the United States and the Bermuda islands.

ISLE AG operates the hotel ranking “Die 101 besten Hotels” and the quality label “Fine Hotels ntv”. Owner Mathis Boldt, CEO of the GIATA Group, said, “With Wolfgang Greiner we gain a leader with international expertise and deep understanding of top‑tier hospitality, ideal to guide ISLE AG into its next development phase.” The appointment is expected to strengthen the platform’s visibility, partner network and direct‑booking focus for hotels across the German‑speaking market.