This was the second time I stayed at this cozy apartment, and It was just as good as I expected: location, cleanliness and taste in decoration could not be any better, as well as Luis hospitality (he is always helpful even when he is travelling abroad).
For those travelers concerned about hot weather (as I am): I stayed in Porto for the hottest week of the summer, and despite the apartment has not AC, It keeps a very nice temperature inside. Indeed, I used the bed sheets and blankets to sleep.
I'll see you next year.