What a great place to stay! Not only for the beautiful appartement (a great plus for the bath- and bedroom with beautiful decor, the superdouche and the waterbed), but also Robert is a great host! We received lots of tips and explanations and maps + a good coffee in the morning :-).
We would recommand to rent some bikes to discover Berlin and get everywhere you want in no time. Much easier than taking the bus or the metro, because Berlin is really large and stretched, but very friendly for bikers. Robert arranged our bikes and reservation for a restaurant with some very good food. Great tip, Robert! We surely would recommand this place to all friends who wants to visit Berlin. Please keep in mind that you will have to take a few steps to get to your appartement (4th floor), but it's good for the condition and it is well worth it :-)
Glad we discovered this place!