Alina, it was a great time in Berlin, your apartment has a very good location - less than 10 minutes walk to CheckPoint Charli and about 25 minutes walk to Bandendubrska Gate.
The flat is one-room - what you see on the pictures is one common room - a double bed separated by a curtain.
The apartment has everything you need - the kitchen is fully equipped (as per the pictures), quite comfortable beds :); WiFi.
Alina is a communicative person and quickly responds to the messages.