Arthur and Hélena made our stay in Porto very comfortable. They were very easy to communicate with and reliable. We were warmly greeted and given an overview of what to see and expect from Porto. The location of the apartment is perfect. My only bit of "warning" is in regards to the neighbours above... They obviously have a family and although out of Hélena and Arthur's control, we were woken early (before 7am) every morning as the kids upstairs ran and jumped for a few hours. Otherwise, great stay!