The service was average, and additional fees were charged. After returning the car, I received a bill that included a €24.16 cleaning fee, which was not disclosed when renting the vehicle. I have never encountered this with other rental companies.
A highway toll fee was also charged mandatorily. Although highways in Austria require toll payments, this fee is typically optional—you can decide whether to purchase it at gas stations if you plan to use the highways.

Car pickup was reasonably efficient.