Definitely 5 stars from me.
Just returned from Porugal after a 4 week holiday. Booked a car with Avis after some problems with Sixt, bit unsure what to expect as never used Avis, but pleasantly surprised, arrived at the counter and met a lady who spoke good English showed her my booking, she was a bit perplexed on what the £50 deposit fee was, but we went ahead, she was really helpful. Got a Renault Captur to drive which was great to drive. Drove just under 2000 km, came to hand the car back, no queues, simple handover no stress. So Thank you again Indigo, you sorted out another hire plan, this time problem free, will definitely use Avis next time. Always reliable, always a great service. Definitely 5 stars from me.