The Real Madrid star has joined Spurs on a season-long loan.
Giggs said: “He will play more regularly than he did at Madrid. It doesn't matter what quality and experience he possesses, it's always better when you are playing — especially in the international arena when you have two games in a short space of time.
“To play a game and then go again is very difficult.
“It'll be so much better if he is playing regularly. He will be sharper, will be able to play those two games.
“He's at a club he knows well, with a very good manager, and he's said it's like going back home.
“It's a good move for Gareth, it's good for Spurs and good for the Premier League in general, to have someone like that who we can watch every week."