For a visit to Berlin, this place is ideal because it's only a short walk to the Underground station or to Aldi and Lidl, as well as a really nice park. The flat is very accessible, being on the ground floor and right by the street. There is wooden flooring throughout, which makes it easy to keep clean and also gives the place a light, airy feel. Check out the small collection of books in the storage room: amongst other things you'll find some useful sightseeing tips.
Oh, and do visit the Argentinian restaurant across the road: it's a real gem - cosy and reasonably priced too.