The host, Danald, was very welcoming and helpful. Arriving later in the evening than agreed due to a delay of the bus to Berlin was no problem. Check out was also flexible and easy.
During my stay it was very easy to stayin touch with Danald using WhatsApp. He responded promply.

The pictures give a good impression of the apartment. The mattress on the bed is of high quality. Because the apartment is situated in a 'Hof' (inner court yard) no street noise is heard.

The apartment is easily reached with public transport. The Ringbahn station, U-Bahn (connection to Alexanderplatz) and tram (connection to Hackische Höfe, Neuer Synagoge, Museum-Insel and Reichstag) are all reached in 5 minutes on foot.
There are plenty of shops and restaurants in the area.
Internet (WiFi) works perfectly.

The description is not fully correct: TV, dryer and jacuzzi are missing (there is a bath though).

When looking for a simple, quiet apartment with a good quality bed and good public transport options I can recommend Danald's place.