It’s hard to see/find the car rental return after hours & in the dark. Also, the location to drop the key off is inside the airport. Difficult to do when you are traveling by train & not flying since the airport doesn’t open after 5am. I had to leave the keys in the car with it unlocked, because it wouldn’t stay locked when I shut the door with the keys inside. I called Hertz after they opened at 8am, which took at least 1/2 hours of cell service, which cost me 25 cents a minute. It was difficult to speak to someone, as there was no English option. I had to keep hanging up, pressing buttons & calling back until someone answered & was not a recording, then I got put on hold. I called back & finally spoke to someone who spoke a little English, but since I was on the train, the connection was really bad. Thankfully, she seemed to eventually get the gist of what I was trying to tell her (where the car & keys were), as I got an invoice in my email the next morning for the correct amount.