Dear Lorenzo, first of all the apartment is not on the ground floor . It is on the first floor with free view. I am sorry, but noisy was your small child. The sleeping room to the courtyard is absolutely quiet. The sleeping room to the street is very quiet too. It´s a room to the street and the apartment is absolutely central in Mitte. Sorry that the apartment is not on country side! The street is very quiet with car traffic and limited on 10 km/h.
The lack of curtain is a personal view and part of the design of the flat.
There is nobody living across.