Stella is an amazing host. Very quick with responses and always available and willing to support you with your requirements and queries. :)
The apartment has stylish interiors (just like the pictures) and has everything you might need.
The apartment has two bedrooms with capacity to host 6 people (2 in a small room and 4 in master bedroom). It is ideal for a group of friends sharing an apartment or a family. Location wise, apartment is located at 5 min walk to Berghain (1 bus stop away-direction Ostabanauf) and to a street full of restaurants/cafes/bars at a 5-10 min walk (2 bus stops) in the other direction (towards Storkower street). For other touristy stuff, you will probably need to rely on the S-bahn and you will be commuting to Austabanof station for that pretty frequently (15 min walk or 3 quick bus stops from apartment).
All in all a great experience and definitely recommend to others. :)