Katrinas place was bigger than we had imagined. The rooms are really spacious; plenty of room for 5 adults. The apartment was bright and well insulated. The beds were really comfy.
The location was perfect as it was within walking distance to many attractions and only a few minutes walk to the local HIT supermarket. (Please note closed on sundays as most supermarkets)
Plenty of good restaurants around and short walk to the bus stops and underground station.
I definitely recommend this place for anyone visiting Berlin!