26 year old girl looking for accommodation

Hi there, I've been enrolled in the digital design course offered by the New Digital School (located in rua da constituicao). With classes commencing from 15th of January onwards, I'll be moving to Porto (from India) a day or two in advance. I'm looking to land an accommodation near rua da constituicao preferably. I'd prefer to book a place for a month, but if the house checks out in terms of comfort and proximity to the school, I'll be looking to stay for the entire duration of the course. Ventilation is my main priority. Looking forward to landing a decent place!