10 out of 10 - we had an amazing time. The apartment is much bigger than the photos make it out to look, and it is incredibly well designed. The location is fantastic, very central with a Lidl, off-licence and many restaurants essentially next door. Great transport links too, the trams are only 2 mins away and take you right into Alexanderplatz.
Fantastic amenities, and a fully-stocked kitchen. Nina was available whenever we needed her, quick responses and a helpful attitude. For what you are paying, I definitely think this is one of the better flats you can go for!