We have spent one week at Porto. The apartment was like the description. One large bedroom with private bathroom and toilets. There are common kitchen and terrace. Only one bad point, the cleaning of the kitchen.
It's an erasmus student residence, it's lively !
You have to walk 25-30min to joign the city center or you can take the metro at Marques station (next to the residence).
Nuno is very reachable and he speaks a good french !
I recommend the apartment of Nuno !