7 of us stayed at Ksenia's place and had a fantastic time. There were enough beds for us all to sleep comfortably, and even though there were only 2 hobs and no oven, we had no problems with the kitchen. Theres a very spacious balcony which we all sat on whenever we were back at the place, though the bedrooms and kitchen are large enough too. The shower was always hot and the bathroom was clean and stocked with toilet roll.
Overall, I definitely recommend Ksenia's place to anyone coming to Prague with a group of 4-8 people!