Female, 21, looking for room in Prague

Hi, 
I'm a student from Antwerp, Belgium and I will be going on Erasmus from the end of September until the half of february. I am looking for a nice apartement with a seperate room and with or without a shared bathroom and kitchen and a washing machine, preferable a shared space with other students to occasionaly chat with. I am very social but prefer a room for myself, because everyone needs some time for themelves from time to time ;). My budget is around 350 - 400 a month and I am hoping to find something around the city center or prague 3.