Christian is a very good host, who looks after everything. There is breakfast, a good two-person bed, a fridge and fast WiFi. Mind you, you will have to negotiate quite a few flights of stairs, but it is very quiet. The U5 underground is a mere five minutes walk away and that will get you to the centre and central station in no time. The area is safe and there is a Edeka supermarket nearby. Absolute value for money.