Alex,
this is not a solution to the problem people are talking about here.
The solution you linked allows to limit the map to displaying only posts from a certain region.
What I am looking for is a solution to set the map center to a location of my choice.
A typical scenario is that you have 90% of all listings in one country and a small fraction of listings on a different continent. If most of your listings are for example in Germany but you have one listing in South America, the map centers on Nigeria.
The expected behaviour would be for the map to center on Germany, where most of the listings are