Stefan's apartment is fantastic, very clean, comfortable, stylish and in a great area, toward the southern end of Prenzlaur Berg and only a 15 minute walk from Alexanderplatz. We had a great time exploring the area nearby in the evenings looking for cool places to eat.

The ceilings are high, the rooms are very large and the decor is a tasteful white. The bathroom is pretty big too and is configured like a wet room, the shower has a large rainforest style head and a hand held jet, both worked very well.

The platz itself is very pleasant and you are afforded a great view from the third floor balcony, there are lot's of young families in the area which lends a nice atmosphere and it feels quite safe, behind the apartment block is a cut through to the Senefelderplatz U-Bahn, there is a very cool area with bars/cafe's and gardens.

There is an extremely well-stocked supermarket on the opposite corner of the platz.

We didn't meet Stefan personally but his housekeeper met us at the apartment and we were allowed to check out quite late in the day too, which was very nice of him.

Two tips -

The elevator serves two floors of the block at once so if you are coming in with bags, press the '2' button then walk down half a flight to get to the apartment.

Perhaps be careful with cab drivers, the two that we used didn't seem too familiar initially with Christinenstraße or Teutoburger Platz they both confused it with a nearby street called Christburger Straße, so perhaps just show them the address. (it could have just been chance of course)

Overall I would highly recommend this apartment, it is a great place to stay in Berlin.