You have probably seen photo captions on Booking.com. This option can be essential for those properties that have multiple lettable units inside them.
To write captions for your images, you should upload your professional images either at the property or the unit level under the Marketing tab on the Images card first. Each image should not exceed 10 MB. Then, you need to scroll down the image and click on the gear icon. A drawer opens in which you can insert your desired caption. Finally, click on Save.
This caption will be shown to the Guest.
Note that each caption can have 300 characters to be saved.