The apartment is located quite close to the Porto city center and is accessible directly from the street.
It was clean, with all necessary equipment. The hostel staff was also very nice and helpful.
The only thing I would highlight was the noise. Paradoxically I wasn't that much bothered by the street noise as by the noise coming from this water flow(?) meter hidden below the cupboard(the bed and the kitchenette are in the same room). It could get quite noisy even in late night or early morning hours presumably anytime somebody in the hostel ran the water. I was given earplugs but this didn't help at all. So this could be a problem for people with lighter sleep.