This site is one that some friends of mine have used a number of times as the owners are well informed about disabled builds and holiday apartments, they go to the villa owners before the rental is advertised and ask if a few minor tweeks can be made to the drive etc. These can be very slight adjustments that alot of property owners dont even think of, they imagine that a disabled friendly property has to be all handles and cumbersome items, but these properties are not and take into account the entire family staying in the property ie: the able bodied parents and siblings and also that a disabled traveller wants a break from being seen as different and here they say they can feel just like everyone else. The website my friends have told me about is: http://www.holidayrentalcentre.com/holiday/disabledaccess/

I hope you find what you are looking for, some of these properties are wonderful. Thankyou