Armin's place is great and he is very fast to communicate on anything and everything you need. The apartment is spacious and has a couple of small balconies and lots of windows, so it is very light and bright. If you are old and have heavy luggage then you might struggle with the stairs, but for anyone else it's just good quick exercise. The immediate area around the apartment has an abundance of restaurants, and you're a very short walk to the closest S-Bahn.