The room was OK, it was clean, had a big desk, a squeaky chair and a single bed.
The price was very low, because of a quite big number of limitations the place has. Even though the description of the apartment says that it contains "a kitchen with fridge, stove and oven", this information is useless for the guests, because they're not actually allowed to use the stove and oven. In fact, I could only use the fridge, microwave and some (not all) of the dishes. This is stated in the list of amenities in the listing, but it could have been made clearer. Upon arrival, the owner explained in detail that she can't financially afford to let guests use her stove for the price she charges, which is understandable, but it would have made more sense to me to just charge more and let the guests actually cook their meals. For the same reason, I was not allowed to use the washing machine (which was stated in the amenities list, so it wasn't a surprise, and there's a laundry mat nearby, so it wasn't a problem). I also wasn't allowed to eat in the room, presumably so that I wouldn't damage the furniture. I was instructed to eat in the kitchen, which was very unpleasant, because of how dirty the kitchen was, and there were so many dirty dishes and garbage on the counters that I was barely able to prepare my meals.
The place was far from the centre of Porto, reachable by a long bus ride, or a shorter train ride from Ermesinde station with a 17 minute walk to the station.
Even though I let the owner know what time I'd arrive and I arrived on time, I had to wait and the owner let me in only after I called her phone.
The view from the room was nice (although it's not facing west, so you can't actually see the sunset, despite the room being called "sunset room").
The owner was very communicative and talked to me every time I left the room. She offered to take me hiking and let me try some tea and wine, which was kind of her. I would have appreciated a bit more personal space though.
The owner changed my sheets and towels every week, which I appreciated.