Citer is a subsidiary of Enterprise. In Grenoble, the reception area is shared with Enterprise, so it took a while to find it initially. We returned the car on a Sunday evening at 6 PM and no staff were on duty. We had to use the self-service return, but the parking lot was full and it took an hour to find a spot. Additionally, there was a 1000 euro pre-authorization which took nearly 10 days to release after returning the car, which seems a bit too long. Overall, we were satisfied. We booked a Citroën C4 or equivalent and got a Toyota Auris hybrid. Though its power was lacking, it had a fuel consumption of 5 liters per 100 kilometers, making it a cost-effective choice.