We’ve come back from Corfu this week. Nothing seems that cheap to hire there. We’ve been there 3 times in the last 7 years and used a different company each time based on what deals were available, I used Discover Cars as a broker website and ended up booking via them with Dirent (which seemed to also be Thrifty Car Rentals). 5 minute minibus from the airport and all sorted fine, handover etc was no problem, it’s also opposite Lidl so ideal for picking up the car and going to the beer/water shop. Car was an Fiat Tipo which was a few years old and a bit tatty but the state of the roads and the horrendous narrow steep roads to beaches I’d not want to be driving anything too nice.
Also if you want to hire a boat for the day (well worth it, we did it twice, once on each side of the island) look up 35 Boats for Hire, it’s run by a lovely family and situated on the East side, not too far north of Corfu town.
Finally I can also recommend Ermones Villas fro accommodation a bit off the beaten track. We’ve stayed there 3 times and it’s run by a nice couple, the accommodation is clean with fantastic views and is pretty central so a good base to explore.