Cesar's place was everything I expected and more, I really couldn't fault it.
It was very clean, had everything we needed, great furnishings and was in pretty much the best location you could hope for. About 100 yards from Trinidade Metro station, which serves all 6 different lines and a 30 minute direct run from the airport and is about a 10 minute walk downhill into the centre.
I would highly recommend this place for a stay in Oporto, good value for money and a great host.
Thanks, Cesar.