We have rented a vehicle with Rentalcars. The offer seemed very good but when you get to the airport they tell you that you dont have an insurance and make you contract an extra ensurance.
We contracted full comprehensive insurance with Rentalcars and when we had puncture and had to claim the money thet the rental company took directly from our account without our permission they do not want to know and it is impossible to get in touch with them.
It is better to rent a car directly from the company and NOT with rentalcars.
I would defenitely never recommend to rent a car with Rentalcars.