I had some very nice experiences with Airbnb in Europe but I'm sad to say that this was not one of them. I never actually felt welcome.
First, because Dassia tried to cancel my reservation a week before I enter the apartment. After I insisted to stay there, as i could not find anyway with this price and this close to the office, we scheduled getting the keys of the apartment in Berlin where she lives and everything felt like they were doing me a favor.
Second, because I found a very messy and dirty apartment in my way in.
I complained with Michael about it (Dassia doesn't live in apartment, her partner Michael does, but was not there during my stay) and asked for a refund of my 15 euro cleaning fee. He refused and said that it was used to clean the room.
The room was clean indeed, but the bathroom had a dirty towel dumped on the sofa; the kitchen had greasy utensils and food lying on the table; and there was even some dry tangerin peels on the hallway's table. He said that if I was not confortable, I could find another place to stay.
They informed me that no one was in the apartment since the last guess checked out, which shows that they had no business preparing the apartment to receive me.
That said, the room and the apartment are nice. Have some problems but are big and well located. I do believe that you can have a waay better experience than mine if the hosts are more professional.
The kitchen is speacially enjoyable and I spent most of my time there as the wifi is very bad in the room. The bathroom super big as well, but is lacking a toilet.