Joasha’s place is amazing! It is exactly as described. The room I was three months in (Princess) is huge! It has big windows a to little garden, so the ambience is perfect. Also, even if Berlin was so warm during my stay, the place and the room were always cool.
There is also a huge garden in the house, which can be used anytime. Very relaxing. Again, the kitchen is very big, and fully equipped.
It is very easy to communicate with Joasha and she is always very helpful.
I totally recommend to stay in this place. Oh! And the location is awesome… less than 5 minutes walk to two U bahn stations.