Amazing!
I strongly recommend this place! It is located straight away from the metro station and it has around it a lot of buses. There is a 4 station straight line towards the city centre which takes us 10-15 minutes. Also it took us 20-25 minutes by foot.
There are a lot of places to it around it.
The communication with the host was really easy, they were very helpful and always available to provide us what we needed.
The apartment is really clean and nicely decorated.
The auto checkin has been done really easily.
A potential minus it may have is that there is some noise from the outside - a lot of traffic, there are a lot of buses. Also, there is some noise from the inside of the building, we easily heard our neighbours, especially the ones above us - the floor is squeaking almost at every step. If you are a noise sensitive person, this might be a problem. It wasn't at all for us.
Comparing with its advantages, this thing should not be an issue though.
If I will ever go back to Porto, for sure I will choose this place again.