It helps with rentals in many ways like instant notifications via mobile/desktop application , update rates and availability for channels at one click - to get same rates on Booking, Agoda, Expedia.
Different kind of discounts (with explanation and manual), easy to set up yourself.
Payment Gateway to get prepayment for direct reservations and reservations via Booking.com.
Print reservation card for guests.
Get direct bookings with a free mini-site.
Very user friendly, good service provided. I would recommend this product.