Luis' apartment was a delight to stay in, right in the Riberia waterfront district of Porto. There's a small balcony overlooking the river and bustle of the street below, great to share wine and cheese on at night or to take in the sunshine in the morning. It's split into a bedroom and shower on the river side, and then the bathroom and kitchen across a small hallway, but we never had any convenience issue with the layout. Everything was clean, tidy, and modern, and we had more than enough space for our luggage.
Luis was a great host, ensuring that we knew our way around the city, checking up via email to make sure our visit went smoothly, and even meeting us at the metro to guide us to the apartment. The central location meant that all of the main attractions were within walking distance, and we never had to worry about transit or cabs/ubers.
I would definitely recommend the apartment and Luis as a host to anyone looking to visit Porto.