Staying at Carlos place was good, he was very helpful, kind, really cheerful and communication with him was smooth. :-)
His kitchen is well equipped and coffee delicious.
If you are searching for a room in Berlin in a reasonable price, this place is for you.
The location of the apartment is nice - peaceful, green and beautiful area, very well connected to the center of Berlin with a metro and in the direction of wonderful lakes and forest area of Wannsee, further charming Potsdam etc.
Carlos has two lovely and curious cats. ;-)