We are NOT talking a single room with cubicles and shared wash basins, as is the case with single sex ones. Each of these toilets is entirely enclosed, (just like the toilet in your own home is), and usually has its own hand washing facilities.
Not true. I attend an evening club based in a local primary. Their toilets are unisex - 3 cubicles, with gaps below and above, and shared washbasin space. Washbasin space not visible from the corridor, two doors and a small passageway to get into them.
Imagine being an 11 year old girl trying to handle your first periods in this environment. 
