We rented a quad here. On a positive note, it worked properly without any issues and seemed to be in good condition. However, stuff is just unprofessional, like they don’t clean your helmets from previous drivers but have to ask them to clean, otherwise you won’t see anything through them. Also, they just explain the basics and let you into the “wild”, but don’t tell you how to turn on lights, where’s the horn, how to turn on turn signals etc, maybe just they don’t use it in Santorini, or what… Even worse, they gave us quad with only two lines showing the reservoir level, and told us “just return the quad with also two lines back to us”, and as we were in a hurry, we didn’t pay attention to that small detail, but of course, after only 10 minutes of ride those two lines turned to only one!!!, and how the heck were we supposed to get to our destination if we only had 10 or what more minutes of ride?! So we came back to them and asked to refill the tank, and they luckily did we no extra words… But who in the world rents a car/quad/whatever with the tank not fully filled?! I’ve never seen that in my life… So, just be careful with that to not experience this situation yourself when renting with them. I’ll give a three star rating, but this could have easily turned to a disaster if we lost gasoline in the middle of a road.