Very well located apartment near Alexanderplatz, close to restaurants and shops around the Mitte, walking distance from Museum Island. Easy access to public transportation to discover Berlin. Rainer was kind enough to greet us late in the evening to give us the keys and let us quit also late afternoon at the end of our stay.
The apartment was quiet and clean, well heated (was pretty cold outside). Kitchen well equipped with brand new electrical supplies. Would just suggest to replace the huge bed pillows with standard ones and provide also large shower towels.
We really enjoyed our stay and hope to have another opportunity to discover Berlin but maybe during summer next time.