We had a very nice stay at Alan&Kasia’s place.
The appartment just looks like the pictures and is very comfy. You can acces to the public transports really easily and the main areas to go out clubbing or grab a beer at the bar is accessible at less than 30 minutes.
People in charge of our check in were very understanding, we were late for the check in but they still waited for us.
We recomand you to stay there if you’re visiting Berlin for the week end!