Great place, great host!
Alvaro's place is adorable!
I have there for only one night (unluckily) we my family, and they all loved it!
It is based on the top of a hill just outside the city centre, overlooking the whole neighborhood.
It has a little nice garden in front that unfortunately, because of the rain, we couldn't enjoy, but that to me it will be great for happy hours and relax in summer.
The unit is divided on 2, with living room, kitchen and bathroom on the ground floor and with the bedrooms upstairs.
Alvaro furnished it with love and attention; it is very well clean and maintaned and also very quiet. You do get great sleeps!
When we got inside we had a chat to him about how things worked and about what to do and see in the city. He had even prepared fruits, bread, butter and jam for our breakfast next morning!
I think he lives just around the corner, but if don't meet him in person he is very quick in responding and in case you need anything he'll be there in no time.
We are overall very satisfied about staying at his place and if I will ever go back to Porto (which I will) I would definitely stay again in his unit.