Overall quite good. The store at Madrid Airport in T4 is easy to find. If you land in T4S, be sure to take the shuttle to T4 to find the store. I wandered around T4S for a while... When returning the car, make sure to go slowly. If you drive too fast and miss the entrance, you'll end up at the parking lot's toll booth. Once you're there, you can't go back and will need to take another lap around. The actual car return entrance is a small, inconspicuous opening on the right before the toll booth.

The service was straightforward without excessive sales pitches.

No issues with the hire or pick up. The car had a few scrapes and dents that the girl on the counter verified on the rental document. The staff on the drop off checked it and I had no issues

Easy platform to use

Car was better than expected and very good fuel consumption. Staff did their job as expected and were friendly and helpful.

Very satisfied with the price (that is the reason I booked). I feel I received the service I expected, which was very good.

Fairly long wait for pick up. Was told when booking online I had paid in full and would pay nothing at pick up. When picking the car up I was required to pay an additional 23€ tax and an 800€ deposit.