Apartment is in a good location however road is very steep, much like most of Porto. We didn't meet Mathieu however he was accessible by message/phone and responded quickly, even booking a taxi to the airport for us.
We used 2 of the 3 bedrooms and found the beds comfortable. Only 1 bedroom has external windows. The bathroom floor area is very small although the shower which is over a bath was roomy and had hot powerful water. Kitchen is roomy for cooking and has microwave, stove top and oven however the eating table is small and would struggle to seat more than 2 or 3.
Excellent new washing machine.
Unfortunately the wooden stairs for entering the building and to the apartments mean it is noisy when people are coming and going and you could hear the people in the apartment above walking around. Maybe an issue for light sleepers.
The apartments front rooms (lounge and a bedroom) have a bit of a view through to the river and to buildings in the distance which was nice especially at night seeing the lights. Close to Restauarnt Fado, the river and 10 mins walk with bags to Sao Bento train station and metro.