I went to Porto in a business trip, so I had to work when back "home". Internet was always working, and the room is full of light -even been located in a cave.
The room was ready earlier the official check in time, as I asked for an early check in. Maria really made an extra mile to accommodate this request. In fact, she is very communicative and she answers in few minutes!
Common areas are clean, bathrooms too, and it's a very sunny house.
Location: not in the tourist area but communicated by metro. My experience, nevertheless, was walking everywhere! everything was 30 min by foot! I like that :)
I recommend this property, nice place out of the crowd