I had a great stay at Escadas during a conference. Check-in and check-out were really easy, and I had very good instructions to the apartment when I first arrived. The apartment was very cute and clean. The bed has lived past its best days already and you could hear all the noise from the street and apartments above you but I slept well although I'm a light sleeper. There's no fridge either.
All in all, it was all perfect, I really recommend this place to stay in lovely Porto!