Looking for a room (from February)

Hi there,

I'm an english teacher, recently moved to Barcelona (I already know the city quite well). Fluent in Spanish and French, Non smoker, daily Yoga practicioner and almost a vegetarian/vegan. Starting from the month of February, I'd like a bigger room than the one I have now. So one with a window, maybe a double bed and some kind of a desk where I could work from in the room. (budget starting from 400 €, ready to pay more depending on size and location). Looking forward to your reply!