22 year old girl from Poland, looking for an apartment for three people

I am a 22 year old girl from Poland, going for a three-month internship in Split from October until January. My friends, two boys from Lithuania and Turkey, are staying for the whole semester, so they would still live in the apartment after I leave. We are searching for something with three bedrooms, max. 300 euro per person monthly. We do not have any pets, but we do smoke cigarettes. We would not be partying in the apartment as we will have to get up early for school/work. Thank you for any information!