During my stay, Joana was in Berlin and I was hosted by her mother, Graca, but she was very kind and friendly. Thank you, Graca. :)
The house was clean and well located.
The main tourist attractions were all on foot and were safe to go at night.
It was noisy until dawn because there were many bars around, but it was no problem as I put on earplugs.
I'd like to recommend it for Porto's lodging.