1. Hover over the "Theme Options" tab in the left sidebar and click "Property Options"
2. You will see following panel:
3. Offer type
You can turn off “Offer Type”, if you don’t need it.
4. Rent label
You can change label for your own e.g. “/week”
5. Assign "Rent label" to appropriate option
It must be set to "For Rent" to work correctly.
If you translate theme, make sure it points correct name in your language.