The apartment is in an excellent location to explore Porto. It is located in the very centre, close to the river, many restaurants and shops. The apartment itself is very tastefully furnished and has a fully equipped kitchen. It was clean and the 2 bathrooms have some basic necessities like towels, shampoo and body wash.
Since the apartment is located in the city centre you might experience some bustling sounds of city life. It didn't bother me much, but if you're a light sleeper, you should probably bring a pair of earplugs.
Street parking is for free, but naturally not much available. There is a parking garage at just 200 metres from the apartment. We paid €75 for two days, which is cheap compared to Amsterdam.
I didn't meet João in person as we were roaming the city, but he responds to messages very quickly and is very helpful.
I would definitely recommend staying at this charming Ribeira apartment!