Did you mean you put it into a page as a shortcode, or you put it into the page template?
When show=”current” the map will show the contents of the current WordPress query. WordPress sets it up automatically based on the arguments in the URL. For example the main page is usually a query showing the index of posts, or if you enter http://www.myblog.com/category it sets up a query for posts in that category.
Looking at that URL, my guess is that the WP query is just to display that one page.
Are you using a custom query inside the template for the list of facilities?
If so – try setting the mashup to exactly the same query instead of “current”.