I stayed here for 3.5 weeks at the height of summer. The apartment is spacious, has lots of natural light, stable and fast Wi-Fi and includes everything of convenience. The one thing 'missing' was air-conditioning, as even when trying to make the most efficient use of shutters and fans, it was often uncomfortably hot at the apartment. Aside from this, I stayed here comfortably for this amount of time. Portuense is not the most central, but the area is lively and safe, and is fairly well-served by public transport.