Unless you have to, don't fly with them. From a comfort point alone, it's not worth the savings you may make. I have flown with other budget carriers, but this one had the worst legroom ever. If you sit upright, your head will be about 50cm from the seat in front of you!
The only really friendly and helpful person was the young man at the luggage drop. On board the staff was clearly stressed. For a French airline to run out of wine (red and white) is quite funny. They ran out of change as well.
Also note, the online check-in has it's problems from time to time.