We stayed in Marco's apartment for four nights. We were extremely pleased with the apartment. We came with our two young children and used the very well equipped kitchen to make our evening meals. Marco and his wife had put up a travel cot for our son and provided toys for the children. It's located two minutes from the beach and just a train/car ride away from Porto. The neighbourhood is lovely and quiet.
I would highly recommend this apartment to anyone wanting to visit Porto but who didn't want to stay right in the city centre.