The only negative experience I had in Costa Rica would have to be at Budget rent a car in San Jose. I should have known things would go wrong when they did not have the automatic 4x4 which I reserved on the Internet. My friend had to drive since I was not familiar with stick shift.The car worked fine for awhile then in the Arenal area the battery stopped working. We would have been stranded in the area if some helpful people in the area did not give us a jump start. A different car rental (not Budget) agency which was close by was kind enough to loan us some jumper cables to use.At the end we turned in the car early since we had an early flight. We asked for a credit for the partial day, they said they would credit us but then said they couldn’t do it. They then offered to provide us instead with free transport to our hostel for the night. Then later, after all the charges were made and everything was signed, they stated they couldn’t take us to the hostel in the San Jose area since it was too far...One final problem was the tank was half full but they charged us for a full tank of gas. To top it off, I think they charged U.S. gas prices as the local gas prices are four times less.Bottom line-Use someone else to rent a car from. Also always get insurance when you drive in this area, since the roads can be dangerous because of pot holes and rain.