The apartment is absolute perfect for big groups like us. There is everything you need in an apartment and everything was clean. The beds and couches are nice to sleep. Our tenth buddy had to sleep to an extra mattress, and it was not that comfortable as in bed or on couch. I know, that they told about the extra mattresses, but there are huge differences between mattresses :D. So, I think, if there is a group, especially only men groups, larger than ten people, think about this point.
The communication with Hedy were also brilliant. She gave us nice tips for activities. The fumoir is also a nice special.