Hidden Paris - MK2 Grand Palais

I shouldn't really be telling you this, but the cinema in the Grand Palais is the very best and most comfortable in the whole city. It's located on the corner of the building nearest the quai and is so easily missed, even by people who have lived in Paris for decades. It generally shows three different films a day and is the classiest place to sit back and enjoy that I know of. Just keep that to yourself.