The Premier League club crushed the Romanians 5-0 at the Arena National in Bucharest in their first leg of their Champions League play-off.
"We are almost in the Champions League which was our target from the beginning," said the Spaniard.
"It was a great performance and great attitude from the players. We played really, really good, the result is amazing but it's the way we played which means I'm so satisfied. It's a big compliment for these fantastic players.
"All of the managers in the world want to create chances and to concede few, that's what we all want – OK, we are there, so now rest and then focus on Stoke and the second game."