The place was really central and convenient to many of the key tourist sites which were within walking distance also was quite close to tram and bus stop and the river.
Joao was a really friendly and helpful host who met us and assisted us after the trip also (posting an item we left behind).
Note that the apartment is on the top of a hill (like everywhere in Porto) and also that there are some stairs so need to keep that in mind if you have mobility issues, little kids or lots of luggage.