Francisco was a very communicative host and excellent at replying to all my questions before the stay, and with issues while I was there. His apartment is really well located for a visit to Porto - very easy to walk to the city centre and good access to nearby transport hubs. The photos are accurate.
One thing to note: in the bedroom there is a window with a really good blackout screen, but on top is another window that has no blind or curtain so the street lights are visible in the room at night. If you are a light sleeper, there is quite a bit of noise from traffic too. I had ear plugs and an eye mask which solved both problems for me.
The main issue I had was that the apartment has damp. I could smell it in the air when I arrived in the afternoon, but it was worse when I returned to the apartment at night. I messaged Francisco as I couldn't find any extra blankets and he offered to drive some to me, but as he was quite far out of the city I thought I could manage without. However, in the morning my clothes and the bed sheets were damp to the touch and I'd had a very uncomfortable night. Francisco kindly offered to move me to another apartment for the 2nd night, but as this wasn't very easy around the plans I had for my trip, in the end he arranged for an extra thick blanket and a heater for my 2nd night. This definitely helped, but I would have moved if I was going to be there for more than 1 further night.
If the damp issues can be resolved, this would be the perfect little place to stay for a weekend in Porto, and either way, Francisco was an attentive host who tried his best to resolve everything.