Had a great time staying at Sophia Urban Suites. The location was convenient, close to a small mall and food hall (mercado bom successo, which I'd recommend visiting for lots of various portuguese food vendors in a cute modern space). I enjoy walking through a city vs driving/bussing, so I got my (20-25min) hike daily going down into the city center, but I didnt mind. Ubers were also only about a 15 min ride (costing less than 8 euros!). The property was very clean and super quiet! You share a hallway/chapter with guests either below or above you but I never saw the neighbors (or any other guests the whole duration of my 4 night stay). The best part of Sophia was Lurdes, the property manager! She is the most kind, welcoming, gracious and helpful host and was able to accomodate us for an earlier earrival (by 1 hour) and also recommend so many places for us to visit/try in the city. I'd recommend/stay here again if ever in Porto!