The flat is really beautiful, new and very, very clean. It's in the old city center, walk distance to ribiera, all the clubs and everything you want to see in Porto. David was so kind to wait for our check-in after midnight and he provided us with maps, all important info, clean sheets and towels. He also arranged us a cab for check-out and was on our disposal all the time. We recommend him and his flat to everybody who goes there.