Originally Posted by Mike Jacoubowsky

If your next flight is a long one, I'd opt for the room with shower. Depressing or not, you'll probably be able to sleep for a bit. But not too long, given the nature of CDG (how long it takes to check in and clear security, but maybe you don't need to check in again, just clear security?).

As for heading into Paris, you've got an hour transit each way, you need to be back at CDG two hours prior to departure, so that leaves you maybe three hours. Could be worse! What would I do with three hours in Paris? Good question. I'd probably get off at one RER stop and make my way (walking) through neighborhoods to another stop a few hours away.

But most likely I'd opt for the room with a shower.