I have just spent a full month in the apartment and I really recommend it, either for a shorter or a longer stay as I did (since I was working from home I decided to spend a month in Porto to be close to my family - currently I am living abroad). The apartment is fully equipped with all the appliances you may need, the bed is super comfortable and there is a lovely balcony with sun in the afternoon that makes it really pleasant. Also, the location is spectacular. It is really close to Trindade station and Aliados and therefore within walking distance of most of the places you may wanna visit or go to in the downtown.
As a final note I really would like to commend Graça and the team for being super available and quick on answering any question or requests I had.