Hello!
We would be happy to take a look at your site and provide you with some advice about how to make the most of the Related Posts feature. Are you using the Widget or the Shortcode?
When you reply, please make a private reply with your site URL and the WP admin login we can use to check your settings.
Let us know where you want to Related Listings to be displayed (Home, Listing Page, Detail page) and in what region (Bottom, Sidebar Right). Also give us an example of two items. From what I read, you have a ‘place’ that should be related to another CPT, and you want to CPT to be showing in the Related Listings on the page of the place. Are they related by categories or tags? Please add the links of an example of each, that should be related.
Let us know