Sietse Nabben Benchmark Hospitality International, a U.S.-based hospitality management company, has named Sietse Nabben general manager for Hotel Zelos, a Personal Luxury property located in San Francisco, California. Greg Champion, president and COO, made the announcement. Sietse Nabben was previously area general manager for Casa Madrona Hotel and Spa, located in Sausalito, California, as well as The Lodge at Tiburon, located in Tiburon, California. Prior to this role, he held numerous leadership positions for hotels located in Boston, Munich, Chicago and San Francisco. Mr. Nabben earned his Bachelor of Arts degree in Hospitality Management from Hotelschool Heerlen in The Netherlands. He resides with his wife in Sausalito.