Hello,
You are using a physical address for a marker location (not its longitude and latitude values), so please set the
Use server processing property of the
Google Map web part to
true as it is described in the Google Map web part
documentation:
Use server processing: Indicates if the location translations (addresses to coordinates) are processed on server side. If false, client side processing is used. Used only when location is available in human-readable form and when no coordinates are specified or zero.
Best regards,
Jan Hermann