I'm very happy to give this place my recommendation!
I stayed here with two friends and, while the apartment isn't particularly big, we were comfortable, and the high ceilings and tall windows give the place a bright and airy feel.
All amenities within were as advertised and in great repair, and the pool area was lovely, clean and well maintained.
The staff were also great, communicating promptly and clearly before our stay, and checking in during to answer questions and make sure we had all we needed.
The area is a little quiet, but there are restaurants, bars and supermarkets nearby, and the apartment is located a 5 minute walk from a metro station, which is only a few stops from Porto city centre.
Overall, a great base to see Porto from! :)