I travelled to Porto with a friend for 3 nights. The apartment location was perfect, close to all the local as well as the touristy points. The apartment was just as described, but better, and bigger, with a very unique layout and lovely interior design. Maria was also an incredible and reliable host. She gave great recommendations on what to do, where to eat, what to skip and so on. The place was very clean, with well-equipped facilities: kitchen, bathroom, extras. Our only concern was the noise coming from the surrounding bars (not only on weekends!) and barking dogs + mosquitoes. The room downstairs can be stuffy at times, but it's very bright and spacious and really, when you come to Porto you are out to explore it anyway. The stair to the second floor can make you a little dizzy, so I would recommend taking the other one (yes there is another option ). All in all, we were very satisfied with Maria's lovely place and would highly recommend and even stay in it again!
Have fun in Porto!