Stayed at the apartment for about a month... By myself for most of the time. Cute spot in a nice area that is just outside of the craziness of downtown. But you can easily walk to the subway or other bus stops. The area (Graça) is full of wine bars and there's an amazing look out point up the street. Felt very safe in the area. There's a really cute little bakery/café down the street which I enjoyed.
In terms of the apartment itself... I appreciated how much storage she had and the size of the place. The washer is also amazing and saved me a lot of time. The bathroom is quite small but it was manageable... Although if you are a heavier set individual, you might have some issues with the shower.
Overall an awesome spot. I would recommend :)