Just spent a week as Oli's guest. The apartment is located central to Shopping: KaDeWe und Ku'dam and near metro (U-Bahn). We were received by Oli's father (a very pleasent and kind man) who introduced us to the apartment and its appliances: all you need is there: washing machine and dryer, dish washer, satellite TV etc. Don't worry about the sofa bed - it's as comfortable as any quality bed. Booking was followed within 24 hours by both mail and phone call to confirm. I recommend this apartment.