The flat is a relatively good choice for a big group. The place is clean, in a big building where the company owns all apartments. Communication is always quick, even if the "welcoming" message is a bit threatening (we will call the police for noise, you will pay for every damage and so on): they could rephrase it to sound more gentle!
It is a bit to the east relative to the centre, but it is still in a good location. There is a lot of space in the flat.
The main problem is value: I had booked for 8 with the possibility to cancel before a specific date. Three guests could not come, so I modified the booking, but the price did not change. It was already a bit overpriced; without the applied change, it is too much.
Still, we had fun and good memory here.