Paris is easily accessible by plane with three international airports (Charles de Gaulle, Orly and Beauvais, mainly for low-cost flights), as well as train (Eurostar, Thalys), all well connected to the capital by metro or train (RER).
The local transport network is one of the most efficient in the world: no place in Paris is more than 500 meters away from a Métropolitain station!
The chosen venues for the main conference, the workshop and the social event are located in the heart of Paris, therefore easily accessible.