3 20 years old girls looking for accomodation in Lodz

We are 3 exchange students - girls of University of Lodz in future summer semester in 2015. We will be in Lodz within 4 and half months and for this period we need place to live. So we are looking for the not big (2 rooms) and not expensive flat situated near the center of the city. We would like to have a flat with good kitchen, 2 or 3 sleeping places, bathroom and another home stuff such as washing machine, wardrobe. table with chairs and internet.