Valencia coach Ruben Baraja hailed the home support for victory over Granada.
Los Che won 1-0 via Pepelu's second-half winner.
Baraja said, "All Valencia CF fans must be happy and we must value the fans very much. Today they were spectacular. We had 45,000 people spurring us on and cheering throughout the game, with enthusiasm and support in moments of difficulty.
"That encouragement and push from the fans to the players is vital for us. Mestalla is a differentiating factor. It has led us to overcome moments of difficulty, which we have had.
"I think that us winning today is a great reward, because the match was very tight and difficult. Granada pressed us well. There were almost no chances and the match was decided by the penalty, but for it to be decided by an action like this you have to be very serious and not concede goals.
"The Granada side that always generate 3 or 4 chances, today didn't have opportunities, and that solidity led us to stay alive, have an opportunity and take advantage of the penalty to take the 3 points. We value it because of the great difficulty we saw in the match."