Our 3-days stay in Hae-Ok’s place was perfect : the location is very central to discover the city (between Alexanderplatz, Hackescher Markt & Oranienburger str.), the view over the city amazing, the place clean and Hae-Ok very available on Whatsapp to manage the reservation !
Just bring your earplugs because lots of train are passing by, even during the night!