We loved our stay in this apartment. It's adorable and well located with restaurants and metro and other sights nearby. The water pressure is great, the kitchen and washer are convenient, and there is a good amount of closet storage for unpacking. If you are noise-sensitive, know that the floors are pretty creaky (standard older Portugal building) so you can hear the people above, and we made efforts to walk softly for the neighbors below). Also there is construction nearby, but the windows block most of the sound. If you're very sensitive to clean surfaces, this place is by no means dirty, but it's like staying at a friend's place. Could use some dusting and maybe deeper surface clean, but totally fine for our stay. Parking would be miserable unless you're an expert at Porto city parking. The property management folks were very friendly and when our hot water was out they addressed the issue that same day.
Overall we would definitely stay here again!