Hello! Which hotel did you choose for them? It's a great choice for a vacation! I'm leaving this wonderful city today, and I can recommend a place to your parents that is definitely worth visiting - Boulevard King Jaime I. It's very beautiful and romantic there. As for the transfer, I personally used GetTransfer https://gettransfer.com/en/directions/spain/salou for my entire vacation. They are very nice guys, and the comfort was always top-notch. I will definitely use them again, as I am planning another trip to Salou. There are so many interesting places here, and unfortunately, I didn't have time to visit them all, but I will make up for it in the future!