Thu's apartment is right across the street from Alexanderplatz including the train station and buses that get you anywhere in Berlin quickly. Easy walk to many top sights too! Very clean and modern space that you can tell is set up for a loving young family. Baby pictures and decor abound. Was very hot during my stay, but even with open windows, was amazingly quiet being so close to Alex. Also, the building has an elevator, so much better than dragging luggage upstairs in the heat.