on www.folkestone.in I am trying to place a marker on a map

Hello, on http://www.folkestone.in
I am trying to place a marker on a map showing a cafe's location in a town, using your Google Maps plugin. But I cannot persuade the plugin to zoom in closely enough: if I set the level at zoom 18, it seems to switch back to 'basic' mode and default to 'Details', which is not close enough.
How to I go close enough for this please?: