Oh, I don't have words to describe how was my stayed in Daniela's place. Everything was perfectly in order, so many details that's made a lot of difference.
The flat is superb, really good space, everything working properly and very very clean, really good located, pretty much everything are on walking distance (even with mum hehe).
I have to say thanks again to Daniela because she is so friendly and helpful with so many good tips.
Definitely when I come back to Porto I'll contact her again.