Here is a French article about the strike
http://www.lexpress.fr/actualites/1/...t_1723900.html
Apparently Starwood hires Luxe&Tradition that then hires the workers who feel that they are not properly compensated. The strike started September 29 and as far as I can tell is still continuing (see here:
http://paris.demosphere.eu/rv/42632 ).
And the last article seems to indicate they were also protesting at the Prince de Galles.