Spanish girl looking for a room in Amsterdam URGENTLY!

I'm a Spanish girl, almost 24 years old and I'm going to do an internship at the AMC (Academic Medical Center). I have already been living for 3 years abroad; 1 year in Denmark where I did my Erasmus, and 2 years in the Netherlands (Wageningen and Rotterdam) where I did my Masters. Therefore, I'm quite familiar sharing apartments and I love spending time with my housemates, my future roomies are really important to me :)

I need to move in ASAP!!! I should start my internship like NOW (November) but looking for a room has been extremely tough, probably because all the scams and elevated prices. 

I need it for around 6 months (but we can discuss it) and my budget is a maximun of 600E, much less preferably ;) ;)

I also encourage other people to share an apartment with me or to look something together, it could be easier, not matter where are you from ;)