The apartment is very well located. It is on a quiet street and close to good restaurants and supermarkets. All the sights of Porto were within walking distance so no need for lots of public transport. Flat is super clean and has everything you need for a short stay. We really liked it and would use again.
Metro from airport to Bolhão is easy but slightly confusing as maps:website look as though a change is required but there also seems to be a direct route on E line too.