Great service with Sixt - had a very smooth booking process and also got offered a free upgrade to a Peugeot 3008 from my original Renault. Receptionist/ counter staff (forgot to get his name, whoops) was very helpful and answered all our queries, even providing us with useful information/tips that we were not aware of. Enjoyable experience with Sixt overall, would recommend and book a car through them again :)