25 year old couple looking for a cheap place to stay

Hello! My name is Evangelos and I will be moving to Leiden with my friend Margarita for a master at Leiden University this September. We are looking for cheap accommodation that does not exceed 650 Euros in total to spent our days in Leiden. We are pretty friendly and polite, responsible and clean. We respect the Hollandish culture and we have a huge respect for the Netherlands. That is the reason why I chose to study in Leiden. If you are interested in renting us a room or an apartment within the aforementioned price range, feel free to contact me.