They didn't accompany us to inspect the car; they just briefly explained the route to pick up the car.

New vehicle with high-end features

I requested a receipt from the Europcar staff when returning the car. They said they would email it to me within two hours, but I still hadn't received it after a day. I emailed them, but they didn't respond.

The process is fairly standard, but the service is relatively indifferent, possibly because it's Vienna.

The store in the center of Vienna is very convenient, with car pickup in the adjacent garage, but the garage staff can be hard to find. Once the car is picked up without issues, you can leave directly. Driving was limited to Austria with a provided highway ticket. Returning the car was near Salzburg train station, which required a bit of walking, but self-service return was supported. Overall, it was satisfactory. However, the cancellation of the credit card pre-authorization took a bit long.