Anyone had any experience renting a car from Ace car? It is an in-house car rent company belonging to Ace guesthouse and Home guesthouse in Keflavik. I find the price is half from a standard car company (including all insurance and extra). It's my first time to rent a car in Iceland, actually. I would like to avoid any 'problem'. Should I use a standard (like Avis, Blue, Hertz, etc) ?