This location is a scam. I returned the car fully refilled but there was no attendant. I just dropped off the keys but they decided to charge me 18 dollars for gas because I did not leave a receipt? The tank was full just by looking at the gas gauge! I've never had to leave a gas receipt in all my years of life returning a car at full. It's a scam and I'm surprised a car rental agency in America and especially Avis would pull a stunt like this. You only find these tactics in third world country.
Not only did they lose a customer but they're not going to get away with it. I will dispute the charges with my credit company and make sure to let everyone know not to rent with Avis or return he car at this locatin. If you are forced to drop off the car here make sure you leave a gas receipt or be prepared to dispute the changes with your credit card company.
Update: they refunded me the fuel charge so I won't be disputing this any longer. However, even with no attendant, you're required to leave a gas receipt on your car seat. Be careful with this location.