I stayed only for one night in this apartment (and one more in its "twin") and it was easily the most comfortable place I've ever stayed. A big plus is the amazing design. I can tell that a lot of effort was put into it and it's really Instagrammable.
Trains are a 5 minute walk or less but I could even walk till some museums etc.
All in all, it was an amazing stay and I hope I will visit again in the future!