Looking for accomodation/flatmates at the city center Krakow (21 year old student from Greece)

Heyy! My name is Maria and Im coming from Greece! Ill be studying at the jagellonian univercity from september till january!  I am still not sure where to start to find accomodation. Some people say dormitories is a great solution, and i would like that if there are single rooms.. (i love to socialize and i want a loooot of flatmates, but i want my private space too, some moments)! So do you know if there are dormitories with single rooms? If not then i would like to find roomates at the center! :D I have no preference about roomates (male/female) but it would be great if i could be in a big flat with at least 3 rooms/3 students from aaaany country! ^_^ Feel free to give me some advices or contact me if you are searching for a flatmate! Thank you!