Very satisfied.

The car I reserved was unavailable, but they gave me a free upgrade. Happy!

The return location felt better than the pickup location because the two women at the pickup store seemed to lack patience. I asked if they could spare a few minutes to explain how to use the in-car navigation, but she responded that they didn't even have a minute, even though there were no other customers at the time! Additionally, the rental contract at pickup should ideally include English since not many people from our country can read German, but many can read English.

The customer service agent at pick up was extremely rude. I called the service hotline 2 hours prior to arrival to say that our flight was going to be delayed, I was reassured that the my message will be passed on and budget staff would track the flights and stay up to 2 hours after the opening times if needed . We arrived at the counter 2 minutes after they officially closed, luckily bumping into the lady on her way out. She told us that the counter is now closed, no one told her about flight delays (although I added the flight number to the booking) and she can not re-open for us and that it was not her problem. Only after 10 minutes of persuasion she agreed to open the desk again - which took her less than a minute. When dropping the car off they tried to charge me an additional €80 without explaining why (I had payed the booking already). I refused to pay and it turned out that budget tried to charge me for a deposit for fuel although I returned the car with a full tank. Overall a disappointing experience - I will not book with budget again.