We are a family with two teenage children and the apartment was great for us. It is situated in a residential area with plenty of cafes, bars and supermarkets close by. It is a 25 minute walk into the centre, which we found very easy or you can take the metro/tram/bus which are all close by.
The apartment had everything we needed and although we didn't spend much time in it, it was comfortable and clean. There is one bedroom with a double bed that is at the rear of the apartment which was quiet. The other bedroom has twin beds and is at the front of the apartment. There is a bar on the opposite side of the street that plays loud music until around midnight. Our kids were not disturbed by the noise but some may find it a bit noisy.
We were able to check in before 3pm as the apartment had been free before our arrival. Joao met us at the apartment, kindly waited as we were a bit late and was very helpful and friendly.