From Barcelona to Vigo with a Renfe Talgo 7 night train

After experiencing a Talgo 4 night train from Lisbon in Portugal to Hendaye in France, train enthusiast Jeroen decided to give the Talgo 7 night train a go from Barcelona in Catalonia to Vigo in Galicia. The Talgo trains are operated by the Spanish company Renfe. He tells Trip By Trip how it was.