We will be arriving at Gare du Nord in the mid-afternoon and will need to travel to Hotel Ares Tour Eiffel in the 15th. I'm trying to figure out whether to go by metro or take a taxi. I know that the taxis surcharge for pick-up at a SNCF station and for each bag. There will be 11 of us in all and we will obviously need to split up into at least two or maybe three cabs. Does anyone know whether there is a surcharge for extra passengers (above 2 or 3) in cabs? Also, would this be the best way to get to this hotel?