We currently run a property rental web site www.rentinspain.co.uk for owners to advertise their holiday homes for rent in Spain.  We decide to set up an auction website because the rental market is over-subscribed.  This has led to many properties not taking bookings for many weeks in the year.  The new website www.holidayvillaauctions.com fill a niche in the market place for owner to fill those empty weeks.
It also offers people that leave booking until the last minute another alternative to other last minute websites.