I lived in France, but ultimately wanted to get back to the USA. Visiting France is wonderful, living there not so much, IMO. The day-to-day life is harder than in the USA, at least in my experience. The paperwork nightmare of living there is real and it doesn't stop with the government, it's also the utility companies, banks, landlords etc. To rent a place in France you need to have a co-signer, usually a family member. If you don't have family in France then expect to pay a company to be the co-signer for you. I even knew a French citizen that wound up in a homeless shelter after moving back to France from Germany, all because he didn't have a co-signer or work history in France. To get a bank account in France you need proof of a residence, but to get a residence you need proof of a bank account, hmmm. Doing anything with the bank is the biggest PITA I've ever experienced. I know several French people here in the USA that say they would never move back to France. In the end there really are more opportunities here in the USA.
There are benefits to living there, high quality food, access to healthcare, doctors seem to actually care, cities are bikeable, walkable, and have good public transit. The country side is beautiful, and there is probably no better country for cycling through the countryside, drivers are considerate. Most companies give 5 weeks vacation from day 1, but don't believe that they work less hours during the week, the 35 hour workweek didn't exist as far as I saw. Most of my young-professional French friends would work about 10 hours/day.
I agree with the poster that said the French are not scared of a bad day, or to speak their minds. Unfortunately when hanging out with a group of French people it meant they were almost competing with each other over who had the worst day. They can be quite negative and cynical, just think of the phrase "c'est pas mal" which is used to describe something good.
If you are going for 3-6 months my concerns would be how to find housing and how to get a visa.