I am glad to have communication with such a kind persons as Ilona and Alex, they were very kind and helpful for all the time.
As about the flat, I did not like the furniture, the sofa is very old and jolted, it was uncomfortable to sleep there, pillows were very uncomfortable too, such was the table of the kitchen (bar).
I did not liked the toilet, there is no ventilation and no window, so it is uncomfortable too, when there is 6 or 7 persons in the flat.
Location was good, but for the next time I would prefer to pay more and stay in Prague 1.
Anyway, thanks for everything and sorry for this kind of describtion.