First of all, Ferry and Anabel are both great, caring hosts, thank you very much for having us and handling the unusual situation we faced during our stay!
The apartment is located in the heart of Porto, within a walking distance to almost all of the most important spots you'd like to see.
It is new, well designed and well-equipped (please note that the air conditioning is the portable model that you can put anywhere you want but it is not as effective as "traditional" AC). There is a possibility to park your car on the street which is costly (2,40 EUR per 2 hours) but the hosts are willing to find a more suitable solution for a better price :)
It is worth mentioning that this is a studio apartment and the bedroom is not separated from the living room with the doors. This is obviously not a problem if you travel in 2 people, but for travelling with kids (as we did) it is something worth taking into consideration.