Once the listing is successfully connected to TravelStaytion, (the status of the listing is "Live on channel"), you can see the listing's ID shown under the "Listing ID on Channel" column on TravelStaytion's integration page (for example: 999999).
To vist the listing page on TravelStaytion, add the Listing ID to the following URL, after "/rooms/". For example:
https://www.travelstaytion.com/rooms/999999