Pros
You learn a lot, there are several technologies and a lot of challenges.
Adfab France has a lot of good and very skilled persons.
Cons
I worked at Adfab north America in Montreal for 6 months.
The company expects you to live your all life at work, you can't leave work without felling guilty.
The CEO sells websites under estimated to have the contract, then you have to deliver it with a lot of extra hours not paid. He also put a lot of pressure on you.
If you make a mistake, you can expect him to put more pressure on you and make you feel guilty as if you where a very bad person.
If there is a break and no projects are in progress, you are lucky you will only do the 40 legally hours by doing tutorials.
After quitting, the company didn't give the legal document I asked. I had to ask to the "normes du travail" to get it.