The apartment in Porto was pretty much as advertised. Clean, great views of the river and of good size. Despite it was right on the water, double pane windows keep out the noise because of partying below in the pedestrian river walk and boating activity on the river, and so it was very easy to sleep. Sophia met us at the apartment, showed us around, and was available during the week if we needed anything (we didn’t). Someone came in about every 2 days to change the bed linens and towels, and leave a decanter of Porto and some coffee pods. The kitchen was well equipped, the bathroom good size, the shower very good. It was also very cool in the evenings even though there was no air conditioning. The apartment was very clean, however if the windows are left open there is dirt that blows in from the river, and the outside porches are dirty if you walk outside use slippers or socks.
The apartment in a historical building has been artfully refurbished with apparent stones, creating a lovely authentic cooling cave effect. The only minor downside was a leak from the bathroom sink faucet that forced us to use a bowl to collect the water dripping on the floor. The second minor inconvenience was uncompleted shelving on the bathroom wall where objects could (and did until we realized) fall down in a inaccessible space. These two points can be easily fixed!

The unit is on the 2nd floor so some steps to get up; but there is an elevator if needed.
The apartment is located in the heart of the old medieval city designated as UNESCO World Heritage site. You simply cannot beat the location. It is at walking distance of everything: the cathedral, the bridge, etc.. and by the vibrant river walk with the highest concentration of eateries, bars, and spontaneous street animations. The food in Porto is excellent and cheap. The view from the second floor (US third floor) is simply breathtaking. On the other side of the river you see the other side of the city –Nova Villa Gaia- with famous Porto warehouses and colorful old fashion boats. It is like going back in time.
Overall we were very happy staying there and would do so again.