Really liked the super modern and open office concept. Makes for a cool experience. Friendly staff, quick and easy rental.
I do not however like the parking garage. It is really difficult to make your way to the exit. Returning is even worse though because there are no signs in the garage indicating that Sixt even has spaces there, or how to get to them. Finding the way to the last few floors, is a real pain.
Overall though I am always glad I rented with Sixt, cars are new and clean, rarely any damage at all, and just a good experience.