We didn't meet Afonso himself but his brother welcomed us and showed us around. Communication was very easy and they were flexible with timings etc - with is a great help.
This apartment is in a great location in Porto, only a few minutes walk from the Metro. Lots of attractions/bars/shops are easily walkable too. The flat itself is 2 storey, spacious, clean, well equipped and benefits from a nice terrace area with a hammock too. The wifi works perfectly - so no probs there. I fully recommend this place to people visiting Porto.