[Plugin: Smart Map] Adding reference point

Smart map adds a small google map at the end of posts with a single placemark.

I am creating a site for a hotel that would like to write posts for any points of interest near the hotel.

So I would like to have a single permanent placemark to identify the location of the hotel in every map (along with the location of the point of interest).

Is it possible to modify the code to add this placemark. It is unique to the website so does not have to be configurable.

Thanks.