I think Katharina is the best host ever. She is kind and nice.
Room condition was clean and good, too. I especially loved that super large bed.
The Flat is really close to get tram or subway and it makes me truly comfortable.
There is one more good thing, Arkonaplatz has a famous flee market on sunday, so I could buy some nice goods.
If I can go back to Berlin someday, I definitely share this room again!