Maybe this one fits your needs:
Thanks for the reply! I’ll try that one out for sure.
Were you able to find a solution? I am looking for a solution for the same problem. Could you please help me out here?
Sadly not, so we decided to build our own widget internally. We are planning to publish this for 3rd party use in the future though!
I created a drag/drop widget that also allows you to place markers on a background image. We use it to create floorplans.