I had a great stay at the apartment. The location is unbeatable, right in the centre but very quiet. I was working from the apartment and it was great for that. The internet was fast and it was no problem to do videocalls. Only thing is there were some glitches in the internet from time to time, but really minor ones and they didn't keep me from working (I'm talking about seconds). The kitchen was ok, all you needed in terms of plates, pots and pans. It would be nice if there were basic things like salt, pepper, oil, coffee. I got provided with mini portions of the said things but like you would get on an airplane, for 1 time use.
It was super clean and the shower was awesome. All in all I'd definitely recommend staying there, also as a remote worker. If I come back to Porto I'll gladly stay here again.