Overall, this is one of the better car rental companies in Barcelona. The location is easy to find, and the cars are relatively new, like a 2023 Mini. The staff recommended an upgrade, but it was very cheap, only 10 euros per day, and there was no pressure. They only asked about insurance once, so the whole process was very smooth. The only issue was that their customer service phone number couldn't be reached. For late-night returns, you can just use self-return.