The apartment was just like in the pictures and in a very good spot, pretty much a walking distance from everything!
The communication with the host worked well, and they didn't have any problems with our late check in (closer to 9pm). The boy who was there to meet us was very polite and informative. There was a map and a list of recommendations and places worth visiting for on the table, which was great, since it was our first time visiting Porto.
There was a construction site next to the building, and a party area close to the house which caused a little noise. So if you're a light sleeper I would recommend a pair of earplugs.
Otherwise the visit was very lovely, and we (there were 3 of us) would highly recommend Maria Amelia as a host and this apartment! :)