Bercy

It's not outside Paris. It's actually in the center of the town.

Full name of the indoor venue is "Palais Omnisport Paris Bercy" also known as "POPB" or "Bercy".

It's in the 12th district (XII arrondissement) not so far from the train station called "Gare de Lyon" (10-15 minutes by feet) A subway line takes you just in front of the venue.