The location is great! Easy walk to Alexanderplatz and surrounding nice neighborhood with tons of shops and cafes. Plus, near to tram stops.
The room is very spacious and the private bathroom is a plus, but kindly note that they are not adjacent to each other - the bathroom is at the other side of the apartment.
It is true that you'll really have the privacy - and wifi was fast!
If you have heavy luggage though, the place is at the 4th floor with 9 flights of stairs :D This was one of the details I forgot to ask but it's all good.