I will not advise on the Insurance Save but I will on the Vehicle, make sure you check or ask them to check the spare in front of you, ask about the oil / water levels & have they been checked & is documented, before you get into the car check throughout for Scratches / Dents, if there are any, take a photo & tell them you have done so, check the inside for tears in the seats etc & make sure you have checked the screen for cracks, I have dealt a lot with hire company's abroad, a lot are good but I would not trust them I'm sorry to say.