Had a brilliant stay in the apartment. There were 7 of us sharing but there was so much space in the apartment we didn't get under each other's feet at all. The location was very convenient for public transport (bus and train situated around the corner), supermarkets and takeaways nearby, could access most of Berlin within 15-30 minutes by train or bus.
Simon and Ben were very responsive to emails and couldn't do enough to make sure we had a great stay.
Lovely apartment, lovely hosts and great trip!
Would definitely recommend!