The flat is pleasant, has a great view, and due to its location and layout it's easy to keep it cool, even in July. There's everything you need to feel at home, which made the stay even more pleasant. The only weakness is the double bed: it's quite bouncy, which makes it uncomfortable if you share it and are not part of these lucky people who fall asleep immediately and without any movement.
There's everything at less than a 5 min walk: metro station, but stops, various shops, bars, restaurants, fast-food joints, and even a great viewpoint (Miradouro da Senhora do Monte).
Sandra and her husband were very kind and helpful - thanks to them we were able to find a free parking spot!