Mastercard cardholders can enjoy a complimentary fourth night when booking a stay of three consecutive nights at participating properties:

• The Postcard Dewa, Thimphu, Bhutan
• The Postcard Galle, Sri Lanka
• The Postcard in the Durrung Tea Estate, Assam

Promotion period: 01/04/2025 – 31/03/2026

Terms and conditions
• Applies once per booking and is subject to room availability.
• Cannot be combined with any other offer or voucher.
• Valid only when paying with a Mastercard (credit, debit, or prepaid) issued in the APAC territory.
• The complimentary night must be part of the same booking and room type.
• Reservation must be in the name of the eligible cardholder making the payment.
• The cardholder must present the same Mastercard used for payment at check-in.
• Valid only at listed participating properties.
• Excludes government taxes and service charges.
• Booking must be made through The Postcard Hotel's website or their reservation concierge.

See more details : here