Description: Public toilets off the main quad, are easily accessible. Two urinals and a cubical, wall between the door and urinals give a warning.
Or if going through the revolving doors on Swanston - the toilets above on the mezzanine floor have more space, more cubicles, and more warning. Just be discrete.
Higher floors like 4 or 5 are probably too quiet but Level 1 is also potentially great because of the layout - if only guys make it a thing.