The apartment is in a beautiful location. The Foz area is calm but convenient. I was in Porto for two weeks on business and it was the perfect place to come back to after work. The grocery store is a block away, and there are excellent restaurants as close as the same block, with even more if you're okay with a five to ten-minute walk.
The apartment was really clean and comfortable. If you're in Porto for a short trip it may not be ideal, but for a longer work trip, it was perfect. The amenities are slim, so if you're hoping to roll in for a couple days and have everything you need you may need a trip or two to the supermarket. I was fine with this where I was there for so long, and did visit the supermarket quite a bit.
The view from the balcony is gorgeous - watching the sunset over the Atlantic was a treat! I loved the area and slept with the windows open so I could hear the waves crashing all night long. It would be an absolutely ideal place if you were staying in Porto to use the beaches - the alley next to the apartment has a straight shot, under the busy road, right onto the sand.
There isn't any information about the area in the apartment, so come prepared. Also, don't forget to ask for the wifi and PW, where there is no "welcome" info provided.