We took a Roissy bus from the airport to a stop near the hotel, then took a short cab ride to the hotel (because we had baggage).
The return trip to the airport was all cab. Depending on traffic, etc., I would probably take a cab both ways. My wife appreciates the excitement and frugality of public transportation a little more than I do!
Nothing in Paris is "near" an airport. The hotel is excellent, but I'm not sure it's a "wow" hotel. Location is superb, if you know Paris. For a first visit, the 1st arrondissement is probably a better choice. Also, "wow" in Paris hotels is quite expensive