To add new property, go to Estatik plugin >> Add new property.
Enter title of the listing and description. Then go to the bottom and check Basic info, Media and Address tabs:
Address tab will show the listing location in the frontend.
To upload images, first upload it to Media > Library and select them. Also, you can drag and drop images to change their order in frontend. The first image will be used as a listing box image.
To add video, please enter the code like displayed on screenshot. Video will be shown in Video tab.
Do not forget to Publish or Save draft before closing the page.