We were a group of 7 and its been a wonderful get-together at The Horse Stable.
It offers plenty of room, as well as 2 bathrooms and a fully equipped kitchen, which was excellent for our needs.
We had it always warm and cosy, despite a few chilly winter days in Berlin.
Its not far to a near supermarket, there are various options in the neighbourhood as well as restaurants. Try the historic market hall. :)
We were able to walk to Tiergarten and Siegessaeule in no time, but there is also a great public transport system nearby. (U-Bahn, Bus, S-Bahn, train)
(BUS123 vom Berlin Main Train Station 1.70Eur - stop is 300m from the appartment)
Highly Recommended!!!!