Our stay in the apartment was overall very nice. The apartment looks beautiful, is clean and it has everything you need. The neighborhood is beautiful and really close to the city centre, only 15min walk.
The only thing is that the apartment is to small for 10 people. It has three really big, comfortable beds, but two really small sleeping couches. The one in the living room is just big enough for two, but the one in the sleeping room is not. For 8 people, this apartment is perfect.
And if you come to Prague for a party, this apartment is not for you. The neighbors hear everything, because it is an old building, and they want you to be quiet at 9pm, during a weekend. They will call the police if it is not quiet.