I paid an extra 30 euros for an upgrade and the car was excellent and good value for money

You did very well!

They asked for too much bail, I had to pay more than agreed I was charged for cleaning the car. Never happened!!!!

Interrent charged an additional 191.39 euros, despite easyrentcars receipt saying I'd paid for the car and fully comprehensive insurance and no payment was due on arrival. This was like arriving at the airport for a flight I booked and being told it cost 200 euros extra!? I've then been charged a late charge of 40 euros and I'm still awaiting my 80 euros petrol deposit from May (now August) despite returning the car full and within the hour of the nominated return time. I called several times and was awaiting a response to the emails they had told me to write to. They then directed me to an online claim form, which I've just recieved a response to. They have informed me that the 191.39 is a compulsory charge, even though it was put in the 'Extras' column (therefore not allowing easyrentcar to claim the money back), and not included when or clearly noted when booking the car. It's been an expensive and frustrating experience.

Poor customer service.

The car was just what was needed for the couple of days I was in Las Palmas. The whole experience was good, except for the fact that the insurance cost (80 EUR or a 900 EUR deposit) and the fuel deposit (another 80 EUR) was hidden until I arrived to pick the car up. Not the most unreasonable pricing, but disliked the underhanded way it seemed to be hidden until I had little choice but to pay it. Would have been much happy had it been included in the original cost when booking online.