I do not know much about it and I sure Madrid
Man (now he lives in Spain) and others can give more detail information.
My last visit to Madrid, I was talking to the Chairman of
the Wellington Society over drinks (that is the best time to talk to him
) he mention a complaint book.
I wanted to use the complaint book in Barcelona at the Picasso Museum but I was not sure even if they had one.
Do tour guides have a complaint book or is it for certain business like restaurants?
Bill