We had a lovely stay in Maria's apartment. The outstanding feature is, of course, the garden with its amazing view over the river towards Gaia. We felt very lucky to have such a wonderful bit of open space to enjoy in the middle of Porto and had it to ourselves for most of our stay. The apartment is in a good location within walking distance of the main sights and attractions in the centre of Porto and there are some great local restaurants, and cafes for breakfast etc, only a few minutes walk away. It is also only a short distance down the street to the riverside, although Porto is a hilly place so it's quite a steep slog back up!
The apartment isn't that big but it was perfectly comfortable for our family of four, with 2 good sized bedrooms and double beds. We also made use of the sofa bed in the living room so our teenage boys could have their own beds and this was really easy to put up/down each day with storage for bedding inside. The kitchen is well-equipped and the whole place very clean, well-maintained and attractively decorated/furnished. It's lovely and bright and there are great views from the small balcony and windows at the front.
We didn't get to meet Maria as she was on holiday but communication was good and we were welcomed by a friend who was very helpful and responsive to requests for information on restaurants, local shops, port tasting etc.
We absolutely loved Porto and would definitely recommend Maria's place as a comfortable and convenient place to stay with the wow factor of that garden and view!