By taxi or metro
You'll find taxi stations at airport and train station exits.
Tell your driver to take you to 8 rue Chambiges in the 8th district. Or ask the hotel's concierge to arrange for a chauffeured car to pick you up or take you back to the Orly or Roissy-Charles de Gaulle airports. (The trip costs € 96 one-way in either direction.)
From the Alma Marceau Metro station (line 9), take the exit marked "Place de l'Alma". Once outside, stay on the left side of Montaigne avenue and turn left onto Clément Marot street, then left again onto Chambiges street.