24 years old girl and 30 years boy looking for acomodation in Berlin

Hello,

I'm Kristiana, a 24 years old Erasmus exchange student and I'm gonna be studying in Berlin for one year. I'm Bulgarian but I've been studying the past several years in Madrid. I'm searching for an apartment as soon as possible till June/ July (in case only a shorter period is possible, that would be an option as well). I'm currently with my boyfriend, who will be doing a master in cinematography. We are super nice, outgoing, open minded people, who don't need a lot of space and contribute to a good atmosphere . we are respectful, tidy, active people, who have lived for years in WGs all over Europe. 

Thank you very much and looking forward to your response,