There are 2 train stations in Redondela, Picota is the old station and Redondela is the newer station on the outskirts up the hill. I think there is a regular regional service on renfe. We spent a couple of hours there catching the train from Santiago as we had passed through on the elevated railway line earlier and decided to have a look round, but just had coffees and returned to Santiago.Both Vigo and Pontevedra are worth a visit, Vigo also has a newer station not far from the sea, in Pontevedra the station is about a kilometre from the old part along the camino. Pontevedra was our day out after a recent Camino Ingles. Enjoy whatever you decide.