I have re-edited this page and add the map below. I have written what I did to prepare the Google map and iframe code and how to paste the code into Sandvox Pro.

...it's has had a nice 'Twitter' about by Karelia:
[https://twitter.com/karelia/status/987721532]

The how to instruction is here:
[Sandvox - Google Maps - Prepare Map and Add iFrame Code]