You can earn money providing listing and featured submissions for visitors on portal with PayPal/Cash/Bank transfer payment support. You can earn money with Google AdSense or other similar service. You can add custom fields (textareas, inputs, dropdowns) / Indoor amenities / Outdoor amenities / distances direct from Admin interface (No programming skills needed). Top notch multilanguage features like auto-translating with MyMemory API service and Google translator (manually corrections are also supported), RTL, look this extra simplicity, try administration!