Offer special terms to guests from selected countries
Capture domestic travellers with a unique rate
Attract guests from selected regions with special deals just for them
In Rentals United -> Services -> Booking.com -> Promotions
Create new promotion -> Country Rate
Select the countries the promotion should be applied to -> Select the discount value -> the discount will be applied for all dates automatically, so if you wish to exclude certain dates, click on choose dates.
Select the Booking.com listings the promotion should apply for -> Create promotion.