The apartment was the best I had in Berlin so far in this price range for 1 person, and I'd had many.
It is so close to the subway I could get anywhere in the city really quickly. There is a supermarket Edeka next to the subway entrance. Some cafes though I liked some that took more time to reach which was okay. The bus to the center is on the same distance that subway but on another side of the boulevard.
The area is quiet and safe and cute (even the graveyards, haha). The building is beautiful, I nearly haven't seen or heard the neighbors for all the week I was living there. When I was drinking my morning tea, I could watch red squirrels jumping and playing outside the window.
Stefan was kind in messaging and answered quickly, I got no problems with keys and locks and wi-fi password and sheets and towels and all that stuff.
It's been great.