Print in the orientation as the stl is loading which both should be straight up and flat.
The hairy part of the broomstick should be printed with no supports and with a much higher infill (80-90) so it can be weighted down when complete. The infill will only effect the inner part of the model not the bristles of the broom.
The top long part of the model should be printed with supports and can have a lesser infill. I had the wall thickness by 1 mm