We were met at the apartment by Martha's Aunt Raquel who was very welcoming and had left us Nata's which were gorgeous. Also our flight was an hour delayed but she was very understanding. The location is amazing, so easy to get to from the airport. The main room on the 5th floor overlooks a lovely street/square and from the window you can see one the worlds most beautiful railway stations, the tiling inside is fantastic. From the apartment it is very easy to get to the buzzing nightlife (a couple of streets away), the Jewish area and down to the river in 10 mins. We were there on the weekend of the euros final so there were giant screens on the square outside, but once the windows were closed it wasn't too loud. The flat is very hot but there are fans available. The flat is huge, only two of us staying so we had a spare room, a bathroom each and kitchen. Lovely to have so much space. I would wholeheartedly recommend this apartment and Porto, a beautiful city.