Multi Engine Hire
I did it recently to build the hours required for the Multi Engine Instructor Rating. I live in Spain and rented a Partenavia from Nivel 195 in Granada, the prices were ok and it was convenient as they only required a minimum of 2 hours per day. Great aircraft to fly too!
The cheapest I found was in the UK, although after a month of trying to sort one out with 5 different companies not one of them came through in the end!
Good luck!