My family and I had a wonderful experience at Marcos's apartment.
The house is nicely furnished, comfortable for family stay and is exactly as shown on the site. It has all the required amenities including a well supplied kitchen, good wifi connection and ample parking space.
The location is excellent with a lovely beach promenade and nice restaurants in the vicinity as well as shops and supermarkets. Porto center is not far either.
Marcos was very prompt with responses and quite helpful with the directions as well as with the check-in and check-out processes. He also gave some great recommendations for places nearby.
Top recommendation!