i rent my room in a 2-Room-Flat in the heart of Berlin. The flat is very warm. The kitchen is completed with stuff for cooking and drinking. In just 5 minutes with feet you arrive Moritzplatz(U8), Oranienstraße, Gendarmenmarkt, Spittelmarkt(U2).
So it is a perfect homebase for discovering berlin because of its central position.
Laptop friendly workspace