This topic made me think about my uni - and I realised... there aren't even any parents rooms / change rooms on campus...

Subtle hinting I suppose...

But I agree with the idea of approaching the Student Union/Guild. ESPECIALLY the womans advocacy group, as they'll FEAST on an issue like this (lol, i would know, I have been on many uni activist groups ).

At the bare minimum, they'll provide a nice area with cleanup facilities, and definately not a toilet! Actually - does your union/guild have its own rooms/building? Because I know a lot do, and they generally also have nice rooms with comfy lounges and usually a small kitchen area with sink and microwave. They aren't widely known, but definately handy!!!!!

Good luck, let us know what happens!