Yes, take the RER red line - about 40 min from the heart of Paris.
If you don't want to take the metro and then the RER due to luggage, take a taxi to the RER station nearest your hotel.
I took my 25 inch suitcase, laptop, handbag on the metro/RER with no issues but if you are not familiar with the European train/metro station it may be a little different than you are used to in America. Some metro stations have a lot of stairs, and the elevator/escalator may be very hard to find, if it does exist!
But taking a taxi to the RER station and then the RER train should be easy enough to navigate. I assume that since you are not going for a long trip, you won't have too much luggage with you...