Luis and his wife are very lovely and helpful. The apartment is in great location, which is a 5 mins walk to the busy street which are full of shops and restaurants. Also, the apartment is very cozy, spacious and clean which is really suitable for a group of friends and family to stay in Porto. There is also a supermarket nearby which you can grab some stuff and cook in the apartment. Luis even printed a thank you card in my home language and gave it to me. I would highly recommend Luis's place to stay in Porto.