Heike's appartment was good, five minutes walk to S-bahn station, quite convenient to everywhere else in Berlin. Although her appartment is in an very old building, but has a very good view in the balcony. I enjoyed it very much! But the worst part is the shower, the hot water could not last for at least 5 mins, sometimes I have to separate washing my hair and having shower. I hope it will get solved soon! Thank you Heike!