Hourihane joined Swansea on Wednesday, with the Republic of Ireland midfielder moving from Aston Villa on loan until the end of the season.
"I thought he was excellent, he's been so impressive since he walked through the door," Swansea boss Cooper said. "You can see he's a real focused, professional individual who is not only going to bring what he possesses, but he also wants to buy into what we're trying to do. That's always the best way to be.
"His composure and quality on the ball was how we wanted it and why we wanted to bring him here. If that's the start of things to come then happy days."