Readily available in France in most restaurants and cafés - just ask for a "déca" (day-kah). This will be decaf from the espresso machine. Filtered (drip) coffee in restaurants and cafés is uncommon; in cafés, you can ask for a pot of hot water to add to your espresso yourself (ask for a double espresso if you do this, you will get a much bigger cup in which to add the water).
I haven't ever seen a hotel room with coffee makers in France.