Spanish 28 years old student looking for a flat

Hi my name is JuanMa im spanish , im looking for a flat in Varsaw during july ,august, and september ( maybe more) Because i just finished my degree and i have a scholarship to work in an academy these 3 months . Im responsable, respectful and clean.

Im looking a flat and people like me who can live in good atmosphere. i will go to working these three months but i want to live a good experience as well, so,  i like parties in the time of parties and work in time of work, although in the flat i would like to live with calm people ( neither like a  entombment haha) . i Hope that you undestand my explication :D

I also looking for a webpage to offer flats and people to  are looking them.

Regards

JuanMa.