The CMS allows you to change a unit's priority to get it more attention. 

A High Priority will make sure the unit shows up toward the top of the default search results. (of course, it still needs to meet the requirements of the user's search.)

A unit with a priority of "Very High" does the same thing as just high priority but it will also add the property to a "Featured Property " block on the website. 

On the list of rentals page, you can filter the units by priority or sort the list by priority.

Here's how to change the priority: 

Edit the unit, then select the priority from the dropdown shown here:

These can also be edited in bulk by selecting the top right button for "Editing Basic Data Button as shown here: