Fred, have you noticed that everyone failed to take account of your original intention, which was to point out the lack of public toilet facilities in Madrid?
I mean, not everyone is comfortable in walking into a bar just to use the services and then walk out again without buying at leat one cortado; and buying that coffee just after using the services promotes the need for yet another stop in another bar for the very same reason withing ten minutes of solving the original problem. Of course, a younger man wouldn't have faced this issue, but that's life.
Rob C