Maria is an excellent host. She waited for us as we arrived a bit late. She was also very obliging and available every time we needed it.
About the house, it is so nice and comfortable to spend some days in Porto. It was 20 min away from the city center if you go walking. Otherwise, the metro station is another option or even the bus is better because the bus stop is exactly next to the house. There are also some supermarkets close to the house and some cafeterias that are so good and cheap (highly recommended to have breakfast there as the pastries are fresh and delicious). Moreover, we had everything we needed in the house (towels, cutlery, etc).