Escapia provides support for creating promo or coupon codes that can be used for discounts on certain properties. The instructions for creating the codes can be found here in the Escapia documentation:

In addition to setting up the details of the promo code in Escapia, it is also necessary to select the "network partners" which may be named "Scurto Marketing" or the name of the site for the promo code. Here is an example of the screen in Escapia:

Also, in some cases Escapia support needs to be contacted again to enable promo codes overall for a particular account.In these cases it is necessary to contact Escapia support to have them enable this feature for your account.