• Offer incentives through your vacation rental website that aren’t available on third-party booking websites (hamper, early check-in/late checkout etc.).
• Encourage loyalty (eg. room upgrade for direct-booking guests).
• Run a seasonal and/or last-minute discount and offer it to a limited audience (eg. previous guests).
• Make sure, that your guests (especially those, who initially booked through third-party platforms) know all about the rewards they will get in case of booking directly (eg. newsletter).
• Ensure, that your vacation rental website allows visitors to book directly as easy as possible (great content, up-to-date availability calendar, simple and secure online booking process etc.) …

(Source: via @supercontrol – Get the full story at http://www.supercontrol.co.uk/resources/three-ways-to-incentivise-your-guests-to-book-directly )