The dragging hours of a lengthy layover at Geneva Airport, courtesy of a missed connecting flight, have me seeking solace in happier travel recollections. Porto, our final stop last spring after two wonderful weeks exploring Portugal, comes vividly to mind. Charles and I drove into the city from the Alentejo, dropping off our rental car at Campanhã station before a quick Uber ride delivered us to our hotel, PortoBay Flores, on the historic Rua das Flores. Rua das Flores, now…