The building is charming and historically old. The room is huge like the apartment and it is very well localized, near the Reichstag, Hbf and Brandenburg Gate. In our stay, we could enjoy pleasant walks in the tier Garten just around the corner, take the bus or the S Bahn to go to Alexanderplatz or go on foot to Hbf or grocery store. The only thing that we would recommend looking for are the stairs of the apartment. Since it is an old building, there are no elevators and the room is in the third floor, so we recommend keeping that in mind for when you are going to the groceries store or are doing check in with a lot of luggage. Apart from that, we spent the christmas there and our experience was amazing. Christian greeted us on the first day but left to travel to his family, so we could have the entire apartment for us (excluding of course his room). Overall very worth it and we would definitely return!