On ORY I can confirm you that the Lounge is airside close to "Gate/Porte A" you will have to take the lift to go up.
The trip between the 2 terminals with the little train called OrlyVal takes 2 minutes and between the terminal the ride is free.
The OrlyVal stops at "Porte/Gate C" of each terminal. Allow 10 minutes to do the trip each way (walk+Orlyval).
If you take the latest flight to Berlin in the evening, controls are not an issue (less than 10 mn).
http://www.aeroportsdeparis.fr/passa...lans-terminaux