Arrival lounge is special in the way that you can access it without going through security. If you arrive in 2E you are not able to access the lounge only when departing from this terminal.
Arrival lounge has plenty of shower and a better selection for breakfast. There are 3 flat massage seats that you may use to take a nap if you have time and need to rest. Beside this it is rather small and nothin
If your flying patern allow you to go to the main Terminal E lounge then you have very nice showers in a nice large lounge but for this you need to have a flight departing from 2E.