Actually, closer to the coast, as you leave Porto, is the litoral route (closest to the water and initially with a lot of boardwalks) and just a little more inland is the coastal route ( you can see the water only occasionally).
I had something like this happen this past summer. The place I had booked (directly with them and not on booking) had overbooked. They notified me of this some time in advance. They rebooked me at another nearby hostal, which actually was more...
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