The rental process was very convenient, the location of the office and parking right next to the arrivals hall. The car was clean, new and in good shape. A few scratches and dents, but no one tried to talk me into it. Deposit refunded without any hassle.
The only problem I had was bad signs to get to the return point. Don't follow the signposts to Rental Car Return, just head to the P3 parking lot. During rush hour this can cost you 30-40 minutes of extra time.
In our case, we had a large buffer until departure time, so it worked out without disaster.