Very nice hotel - the only issue is that it's quite far from the city centre but they do have a shuttle bus. The restaurant food is awesome but restaurant needs to be open longer. The quality is much higher than one would expect from Best Western. Rooms and modalities are more of Westin/Sheraton quality. I will definitely come back as the price for this quality is reasonable.
I did stay at System few weeks ago for 2 nights, it was business stop at Krakow, very nice and comfortable, serves its purpose, staff was friendly and helpfull, i was very impressed with housekeeping spot on