The apartment is exactly as it appears - beautiful! We had a very comfortable stay here for a few days. The hosts communicate mainly through whats app, but were always very helpful, and recommended a fantastic restaurant (if you are in Porto, I definitely suggest you try Flow!) . The streetlight outside the window was very bright, but the fully functional and attractive shutters meant we slept well (although Portuguese pillows are not my favourite, this was common across everywhere we stayed in Portugal). It was easy to walk to a lot of attractions.
There were a couple of minor things I would have liked to know, so I'm putting them in here. There is no washing machine in the complex, but there is a self service laundromat around the corner from the building (called Pete's Laundry). Also u be r is very reasonably priced in Portugal (transfers were a lot more expensive). Note: the hosts provide a few coffee pods, but nothing more, so if you are a tea drinker make sure you bring your own bags/milk, or anything else you may want in the apartment.
Finally, the location is not exactly in among the best restaurants and things. You can get to many good ones, but they are usually over 1.5 hilly kilometres away or more. Again, this was not an issue with ride sharing, but the area is not really 'fun'. It is rather quiet though - even with the construction going on out front (make sure you get dressed with the shutters closed ;) ). Also, there is always an assortment of men sitting on the wall opposite the apartment smoking and loitering - if we'd only been there for one night we probably wouldn't have noticed, but after a couple of days we started wondering. They never bothered us though.
Thank you again for a good stay Pilar and Ines!