4 students from Portugal looking for an 2 or 3 bedrooms apartment in the center of Poznan

Hi, we are four students from Portugal and we are looking for an apartment to rent in Poznan. We are going to stay since January until April 2018. We are looking for a 2 or 3 bedrooms apartment already with furniture, with 4 beds,  near or in the center of the city. Could you help us? We are clean and with good social skills. We don't make a lot a noite and we are desperate to find an apartment until January. The price can go until 3000PLN with 3 bedrooms with fees included.