We stayed at Tobias appartment with four for the weekend and had a nice welcome by his girlfriend. The appartment is clean, well equipped and large enough for the four of us. It's close to the U-bahn (5 min walk) and within 15 minuts you are at Alexander Platz. Free parking in surronding streets and a supermarket at 5 minuts walk. The appartment is ideal when visiting the O2 world for a concert, only 10 minuts by car or U-bahn. Tobias place is a good place to stay when visiting Berlin.