If you're looking for a convenient base to discover the city, then this apartment is perfectly located with the bus and metro station right outside the door.
Well furnished, modern fittings but not for cooking at home although Lidl and a supermercardo are a few minutes away on foot for the basic requirements.
The locals like to visit the establishments directly outside the building which, with the passing traffic, make sleeping a bit difficult.
If that doesn't disturb you too much, then it's a perfect place to stay in Porto.