Mastercard cardholders can enjoy a complimentary third night when booking a stay of two consecutive nights (Stay 3 nights Pay 2 nights) at participating properties:
• Anantara Hoi An Resort
• Anantara Quy Nhon Villas

Promotion period: 01/02/2025 - 31/12/2025

Terms and conditions
• Valid only when paying with a Mastercard (credit, debit, or prepaid) issued in the APAC territory.
• Book via website or directly via email and phone using code “ONENIGHTFREE"

See more details here