What is the best way to get to the hotel from the CDG airport? Also, we arrive at 11am; what time would we be able to check in?
We took an Air France shuttle bus that stopped about two blocks away from the hotel near the Arc. You do not need to come in on AF to take the shuttle.
I do not know what official check-in time is. We arrived about 11 and they had our room ready so let us in. If the room had not been ready, they would have held our bags until check-in - they were very professional and accommodating.
Get an answer from Acacias Etoile Hotel staff and past guests.