Several days before we got to the apartment we got a fully documented explanation from Ingela about the apartment and how to get into it.. It was a very smooth check-in!
The apartment was great! Clean and well organized with great two toilets and very useful kitchen, plus, it is located perfectly right next to U-Bahn station, no more than 200 meters away.
The building is quite old but the apartment is totally new (and the building should be destructed sometime this year).