Great apartment, really recommend. We stayed here for a few nights and loved it. Everything inside is clean and modern and the bed is insanely comfy. The balcony has an amazing view of the city and it’s a great place to have your morning coffee / evening glass of wine. Location wise it was also ideal, right in the heart of the city so you don’t have to worry about public transport to see any of the main sights.
If you’re in Porto for a few days we really recommend going to see Douro Valley, it’s an amazing day trip, and the train leaves from the station just below the flat!