We had a lovely stay at Matt&Max' appartment.
The appartment is clean, beautiful and especially the view from the balcony is amazing. We didn't miss anything but maybe a little more storage space. Since there is some commute on the cobblestone road you can hear the cars in front of the house but we didn't mind too much. As the appartment is located on the riverside opposite to the the city center you have to consider that it takes a couple of minutes and some steep stairs to get to the city center. But that goes for almost every area of the city. On the other hand the beautiful riverside of Duoro and the big portwine cellars are very near and there are a few small mercados in the area. The Cafe arroba e meia is very close and has some delicious breakfast.
We really enjoyed our stay and would come again.