I stayed here with a group of 4 other friends (July 2019) and we were all blown away by this house. Built over 3 floors, you get the entire place to yourself. It's modern, very clean, with lovely touches (Wii, Chromecast, washing tablets, umbrellas, shower gel and shampoo, iron...I could go on) and the view of the main bridge is breathtaking.
Check-in was extremely easy - simply a code after 3 pm. Location is ideal - as central as you can be and on a quiet street so you won't be disturbed. Alvaro was very accommodating and kept us well updated, checked we were okay and clearly cared that we had the best experience in Porto.
Overall, I would highly recommend this place - awesome location, perfect interior and amenities and a stunning view meant that this trip to Porto was unforgettable.