Filipa couldn't be there to give us the key in person, but she organized it very well. Therefore it was no problem to get the key and find the apartment. She also provided us with a lot of tips about where to buy groceries, nice places to eat, bars and everything we needed. We felt welcome and well informed.
The apartment was just like expected, it is small and simple, perfect for a few days in Porto since it's right in the heart of town. The bed is noisy (when you move around) and you can hear the neighbours walking around upstairs, but that was not a problem for us. The kitchen and the bathroom are small and practical, you find everyhing you need. It was pretty humid in the room, but since there is a dryer (you can switch it off during the night), that was not a problem.
I would definitely recommend Filipa's apartment!