This is a small, but very cozy apartment. We were a group of three and stayed there for four nights, which was very comfortable. The location is not ideal when visiting Porto, as the place is not close to the centre or places of interest and it is quite a bit of walking up and down some hills.
The main problem is how the apartment is managed. It is the first time that I rented an AirBnB that is run by a company and it is certainly not the same experience, as communication is very impersonal, for example through automatic emails. I tried to arrange transfer from the airport and they did not get it right even after numerous messages and I got stranded at the airport not knowing whether transfer is still on its way or whether I should make my own way. It was difficult to reach them in that moment as well. They did not even apologise for their mistake. The same happened at check-out. We just received an email with the warning that the front door will be closed if we check-out early, which is what we did. After asking for some clarification about this and what to do with the keys, I never received an answer.
Check-in was also not very smooth. The guy who showed us the apartment did not really know the place and gave us for example wrong directions for the supermarket. They also had not set-up the place for three, even so we had booked for three. Someone had to come back later to bring more towels and bedding.
In sum, its a very decent apartment to stay in, but communication and management of the place could certainly be improved.