Communication with Pedro before the rental date was great and Joana greeted us there to show us around the loft upon arrival. The apartment was very clean and had everything we needed. We were kindly welcomed with a small sampling of port, which we enjoyed on the fantastic balcony overlooking the city. You get a view of the sea and sunset from there as well, worth the four story climb up the stairs!
The apartment is not in the thick of Porto's tourist area so you have to decide if that's good for you - for us it was great, and all the main sights were a 20 minute downhill walk away. The apartment is conveniently situated near a couple metro lines/bus stops and Uber is very cheap in Porto (compared to the US) so you have a few options besides walking.
Overall a great stay with thoughtful hosts. I recommend the loft to those visiting Porto that don't need to be in the middle of the tourist attractions.