One of the best places I have stayed. Would definitely come back and recommend to anyone.
Great Location: Close to the Eiffel Tower, which is visible from the balcony. There is also supermarkets and small shops near by to buy what you need. The building seems to be done just to host guests so has a hotel feel with the "lobby", halls and lift being more spacious than I originally expected.
The Flat looked exactly like the pictures: Clean and comfortable even the sofa bed. Just recommend that you do fold it in daily if you plan to use the living area as it does take much of the space when unfolded. The kitchen had everything that we needed to cook including extra plates, cups and utensils.
Communication was also amazing: I had a few last minute changes so had to add an extra night and the process and communication for those changes was really easy. There was also a booklet with suggestions and directions on how to use items such as the washing machine which came in handy for us.