BANGKOK, THAILAND - Media OutReach Newswire - 21 November 2025 - ONYX Hospitality Group, - a key regional player, and a prominent management company in Southeast Asia, specialising in hotels and resorts, serviced apartments, and luxury residences under the Amari, OZO, Shama, and Oriental Residence brands, has strengthened its position as a leader in Thailand's wellness sector with two major national distinctions.