Very good flat for this price! Big clean apartment, rather quiet place, well furnished and equipped. The flat owner was very nice and even though we
have changed the check-in time three times the day before the arrival he meet us with no problems :) The old city center is ~15-20 minutes of walking, metro is ~5 minutes. There were only two issues with the flat: the WC is quite cold (at least in winter time) and looks like there is a hot water limit which we were not aware of before we started to use it.
P.S. There is very nice restaurant "U Hudku" nearby with low price and good quality food.