The Gunners took a 2-0 win over the German side in the Champions League, but could not overturn the deficit from the first leg.
The Spaniard told Arsenal.com: "The positive we take out of the game is that we gave a good account of ourselves against one of the favourites for the Champions League, winning at their stadium.
"The team can gain momentum from this. We have to use this game as an example for the future and try to play as well as we did against Bayern.
"[Swansea City] are a team that will be difficult to play against, they play good football. Michael Laudrup has a philosophy that is great for the supporters to watch. We hope we can get the better of them because, for us, it's vital to get the points."
Arsenal face the League Cup winners tomorrow.