I have both positive and negative things to say about my stay. First the positive. I really loved the location. The apartment is very centrally located and almost everything is walkable. The apartment itself is great, it is unique and there is a lot of space (including two separate balconies). The company that rents out the apartment is very attentive. There were heating units in the apartment, which was VERY important (especially during Porto winter).
A couple of negative points. There was intense construction work that was being done right outside the apartment. There was drilling right next to the apartment and men that were JUST outside of the balcony (on scaffolds). Not only were we not informed about the construction, but we were also not informed that the road to the apartment was closed. Thankfully, construction was only happening on Friday, but I would caution anyone staying in the apartment during the week - the noise was actually unbearable. The apartment was tidy and beautifully designed, however, the couch cushions did have some spots on them that should be cleaned. It would have also been nice to have some necessities available like one or two coffees, sugar, or even salt. Also, we ran out of hot water on our last day, which wasn't fun.