Can I use discount coupons (e.g. issued by magazines, stores, etc.)?
Although booking.com does not accept coupons directly, they do offer discounts that will automatically be applied during checkout.
For example, follow the link below for 15% off during peak travel season.
Does Booking.com offer any special consideration discounts, or discounts with airline or hotel loyalty cards?
Booking.com provides the best available rates for the dates of your stay. It is not possible to have any further reductions on the price. In some cases you can find booking.com deals that are not advertised on the website. In such cases you will need to follow the instructions given by the organization issuing the coupon.