Which one is the closest to the airport and uses a shuttle?
Anyone knows where to find a shuttle? What gate? Does it has a name of the hotel painted somewhere?

I forgot to list them. But here they are:

1. Ibis Paris Roissy Charles de Gaulle

2. Ibis Paris Charles de Gaulle Paris Nord 2

3. Ibis Paris Charles de Gaulle Ayroport-Gares

You didn't ask, RBO, but here's some info you might be able to use, unless you are locked into the Ibis. I helped a friend bid on PriceLine for a hotel at CDG, and she was able to stay at the Marriott Courtyard there for $40/night for a double. If you bid on a 3-star at CDG, you'll get the Marriott. Here's a review of the hotel (be sure to copy both lines of the URL):

http://pub180.ezboard.com/fpricelineandexpedia
biddingfrm87.showMessage?topicID=181.topic

I found this information at www.biddingfortravel.com. (I'm not associated with PL or BFT)

Thank you Betsy
We are arriving at CDG 7:30 pm and our flight back to the US is at 9 am next morning so we need a place right there and booking the Ibis is the simplest way for me, if I only knew which one

You need the one called CDG Aeroport-Gares (which should have the address of Roissypole).

The other two are outside the airport a couple miles.