tl:dr - I can't really fault the place or the hosts as it was all absolutely wonderful. I would highly recommend and would definitely go back myself.

Ines and Narciso were very welcoming. We arrived quite early and were able to check-in once we arrived at 1.30pm. Ines did offer that we could leave our bags there if they were not ready to check us in that early but they managed to get everything ready before we arrived. On arrival Ines and her farther Narciso showed us around the flat, explaining anything we might need. They had very kindly bought us some lovely Portuguese food, some beers and a bottle of white wine. We were absolutely starving once we arrived, so ate the food straight away!! Ines and Narciso gave us a quick but detailed run-down of the surrounding areas, giving us plenty of examples of where we may want to go, to either view Porto or where and what we should be eating. The flat is in a perfect place where it is only a couple of minutes to the shop or many restaurants, so on a lazy day you didn't need to go far! It was a 20 minute walk into the old part of Porto, we prefer to walk so this was great for us as I feel we got to see more of Porto. The flat itself was great, the balcony is bigger than it looks on the pictures and gets the sun for most of the afternoon and evening. There are plenty of towels and sheets and anything else you may need. I always enjoy cooking when abroad and the kitchen was simple and easy to use with everything you may need to make a nice meal.

As I say above the place and hosts were great and we really did enjoy ourselves!
Thank you to Ines and Narciso