If you are looking for the perfect Berlin experience, rent out a room at Callum&Cosima, two super warmhearted friendly people who are not only good advisers for things to do and see in Berlin but also so nice and intressting that you will want to stay home an spend the evening with them in their gourgous apartment. With balcony, living room, the big kitchen and spacious bathroom a perfect place to rest after an exciting day in the big city. The location next to Südstern is also perfect, in about 20 minutes you can reach everything you want, and down the house are a lot of restaurants and coffees if you just need to grab some snack.
Would always go there again.