Travel Wifi rents personal Wifi hotspots (also called Mifi) giving up to 4G speed connection on the Bouygues Télécom network for coverage in selected parts of France. It is a small device that fits in your pocket with automatic connectivity and English speaking support services.
To rent your mobile hotspot, log onto their website and book it with a few clicks. The hotspot is delivered via standard mail in France or courier services inside of Paris to any French address (hotel, rental flat or house…). Once you have received your hotspot, the connection is absolutely unlimited in up to 4G speed! The Wifi signal can be shared with up to 10 devices at the same time. Returning it before you leave France is easy — simply pop it in a provided prepaid envelope that you just drop in any mailbox which is what I did from the airport.
They charge according to the rental duration: For 3 days, the price is 10€/day. A week is 8€/day going down to 7€/day for 20 days, 6€/day for 30 days or longer.
Disclosure: we were given a device to use for my trip to France with the French Tourism Board so I had a chance to use it for the week. It worked flawlessly wherever we were and connected quickly. Photo credit from the travel wifi website.