I stayed at Sixtine's lovely apartment for two nights. As the headline says, the apartment really does have the best view overlooking Paris - you can see anything from the Eiffel Tower to Montmartre in the horizon - absolutely amazing!
The apartment itself is super well-equiped, clean and stylish and has everything you'd need for a long weekend. The communication with Sixtine was easy, too! I'd definitely book a stay at Sixtine's apartment again.