Eastcheap Public Toilets

You will find these loos on the island where Eastcheap, King William Street and Gracechurch Street meet, just on the North side of London Bridge.
In my mind these toilets go so highly recommended that I actually engineer a visit to them if I have out of town visitors to London.
Nice wrought iron gates at the entrance, then down the sweeping staircase to the peaceful, subterranean facilities.
There is always an attendant keeping an eye on cleanliness of the facilities.
I expect the attendant also has a discouraging effect against those who might want to use the loos for, how can I put it without causing somebody offence in this era of political correctness, irregular activities not directly related to emptying bladder or bowels.
On the downside the opening hours are pretty short.
Top marks to the City of London Corporation for this sterling service.