Sophie gave us great information for getting to her apartment from Orly. She advised getting Bus Direct which stops 200m from the apartment instead of Orly shuttle, train, Metro. Great advise.
Sophie didn't great us but Lea did and told us everything we needed to know.
Apartment is a great location with patisseries, bars and restaurants within 50 metres. Our visit to Paris was to watch the final stage of Tour de France and we walked to Champs Elysees to see it. Great experience overall