^^no, that was the Rue de l'Université "Hotel Particulier". What we see his house in paris both in Signé Chanel and Lagerfeld Confidentiel is all filmed there.
He didn't own the place, so he moved to Quai Voltaire (the spaceship).
btw, the rue de l'Université mansion is also the place where the Olsens showed their last The Row collection. It also held some magazine party this week I think.
When Karl was there, it was all modern art one floor, and as you said 18th century in the other.
It wasn't like that all the time though... as we know, Karl loves to decorate, redecorate, and reredecorate.
You are right about the 7L bookstore and his studio+privatelibrary: they are both on Rue de Lille. that's where he is interviewed in Karl Un Roi Seul, where he takes pictures for all the press kits, where he dazzles people with the massive amount of books he has (apparently he has more than those we see there, but he has other libraries. did i read somewhere that he has one in the outskirts of Paris?)
About Quai Voltaire (the spaceship), what Diane Kruger said is that he is trying to buy ALL the apartments in the building... so I wouldnt want to enter a highest-bidder game with Karl! Sorry ilaughead, we'll have to settle with Le Ritz
