I have lived for a couple of days in Joao's apartment. It has been a really good experience: Joao was very nice with us and he even came with us to some shops to help to get what we needed. He also left some maps in the apartment and he explained us where to find the best of Porto. The apartment was very cleaned, comfortable and well organised: it was exactly as I expected from the pictures. We also found something to drink for the breakfast and all the stuff for the toilet. I fully recommend Joao's apartment! :)