We have noticed from users this bug. They enter at the time of creation an address but not selecting from the menu below i.e. maps menu the correct one.
In the screenshot below you can see how by entering for example the city of Rome (Italy) the user can save even by not selecting the city from the menu below. This causes that the map will not be included in the listing it will be impossible to find the hosting.
Steps to reproduce
Submit a new listing. Fill out the location form field. Type in something and then click outside of the form field without choosing a location from the dropdown.
I saw that there was already a similar topic open Issue with Location when not choosing location from dropdown lsit
This also happens by typing a location in the search page.