I spent a week in the apartment with my wife and two children, one aged 4 and the other 8.
The apartment and the views are as advertised - modern, clean, plenty space by Paris standards, and genuinely amazing views.
The location in the 19th is great, with nice bars, restaurants, shops, play parks for the kids and very easy access to metro lines to get you to wherever you want to go in Paris.
I'd heartily recommend it.
Paulo