One of the great questions with your planning any trip is “where to stay”. Usually to stay outside of a big city saves you money and time and allows you to see some interesting “local” spots. This however is not the case in Paris. Some may think that staying nearest to the airport is
1) more convenient
2) less expensive.
Both are wrong.
The Charles du Gaule Airport is located at an almost 30 minute RER Train ride from the north of the city (zone 1). The ticket to and from will cost you about 35 euros and there is no way around this unless you are a local and know how to cheat the RER system to benefit you.
The people in this area are PARTICULARLY grumpy and rude mostly in part that they are dealing with tourists all day that have no ide where they are going because that part of the city is almost completely un navigable.
The hotels in this area are very pricy. Despite how it may seem there are much nicer and much less expensive hotels within Paris.
In conclusion even if you are here for one night it is worth it to search out a hotel in the city. Lets face it, if you are in the city you’ll not be in the hotel for very long anyway. So when you are passing through take some time and choose a place that you WANT to stay and not one that seems to be more practical because in the end staying where you WANT is the more practical choice.