Everything mentioned in previous reviews seemed to be true. We were warmly welcomed by Ivo who explained everything to us.
The house was more than large enough for the six of us. Everything we need was available. We were even able to wash our clothes. The house was clean and has 2 perfect bathrooms.
Location of the house is perfect. A few minutes walk from U2 which brings you to Alexanderplatz in another few minutes. In the neighborhood are more than enough places to do groceries and grab some food. Unfortunately we weren't able to find many 'kleine kneipes' :-)
For every group that wants to visit Berlin I definitely would recommend this place.