Apartments4u - Offers short & longer term rentals in major cities or smaller towns in Poland.
http://www.a4u.pl/
Cracow Apartments - Offers a range of furnished apartments in the very heart of Krakow at competitive prices.
http://www.cracow-apartments.com
Krakow Apartments 4rent - Self catering apartments for short and long-term vacation, in a prime central location of Krakow old town.
http://krakowrentals.com/