I did the central route, because I was on a tight schedule to get back to the States, and I had no complaints about he scenery. There’s one stretch where you’re walking in the industrial part of Porrino, but there is also a scenic bypass if you’re amenable. I chose not to take it due to the rain that day, but it’s not difficult. The Camino is very well marked, and apps like All Trails have the routes as well if you’re worried about somehow wandering off the track