"All the Amlin quarter finals have been great advertisements for rugby and Biarritz looked really physical at Gloucester. That is going to be a very tough semi-final for us in Dublin," said Leinster head coach Joe Schmidt.
"I was delighted just to get the result and pleased we had done some homework on Tom Varndell and Christian Wade. Maybe they would have scored four tries each otherwise.
"The ground was very fast and the game got a real tempo of its own. You can't afford to get too loose and at half-time we said we needed to tighten things up, look after the ball and get some control.
"We owed this to our fans after we slipped up last week. It means we get to play a home semi-final in front of them."
Man of the match Gordon D'Arcy, who marked his Amlin debut after 91 Heineken Cup matches with a try, said Leinster were now fully focussed on making it three European titles in a row after their back-to-back Heineken Cup triumphs in 2011 and 2012.
"You have two options when this happens - you can either embrace it or turn your nose up at it. if you turn your nose up at it you are pretty foolish vbecause of the quality of the players in the Amlin Challenge Cup," admited D'Arcy.
"We've come over here and beaten a realy good team and now we have to play against another team (Biarritz) that has beaten another English team on the road. Anybody who wiins this Amlin trophy is going to really, really earn it."