João's place is wonderful to stay in Porto. It has ample space for big groups and families. It also has a well equipped kitchen and bathroom.
The location is near cafes, restaurants, shopping and the Santa Catarina Mall. It is also a walkable distance to most of the attractions mainly Plaça Liberdade.
João is a wonderful host, he personally met us at the flat and accommodated us earlier than the written check-in time despite short notice. He has good communication. He also provided us with a map and recommendation of places to see and eat.
I highly recommend staying with him during your stay in Porto.