Looking for advice: how to display a level map with a player position marked?

My previous thread didn’t get any answers, so I will try once again, from a different angle.

I want to display a map of the level, with the player position marked (square, bitmap, ASCII character, for now anything will do).

Map is in the form of a bitmap. I can display it as a part of widget, it is marking the player position (fetched with GetActorLocation) that is a problem.

Any suggestions?