The Spaniard made an entrance in defeat to Aston Villa.
"He came in with so much enthusiasm and tried his best to make an impact. I thought he did well," Rangel told the South Wales Post.
"Apart from a couple of balls he lost, he did really well. He's been a great signing, as the others have been.
"Sometimes it takes a while to settle, and I think Pablo and the other signings are settling in well.
"It's only been a couple of weeks, but he's enjoying it. He's got his house, he's settling and he's one of many Spanish people in the squad.
"He's enjoying it and that's the main thing."