I stayed there leading a group of 12 college students on an alternative break trip in January. We were working for a week at Give Kids The World which was literally 3 miles down the road.
I wrote a report of the week in the article here, and posted some pictures of the condo.
DIS Unplugged: A Walt Disney World Trip Alternative
I thought it was wonderful, and perfect for our needs. I should note we rented two condos for our group of 12, and only one of them was John and Kevin's Dream Villa.
We were treated like family. There were special gifts left for us in the villa that made us feel so welcome! The villa included a membership to the Sam's Club across the street that I used to stock up on breakfast supplies, water, etc. The villa had so much space, and the students loved the pool and hot tub. They also walked to some of the attractions on International Drive such as miniature golf, Waffle House, and another restaurant.
We could drive to Disney property in minutes, and it was absolutely no issue whatsoever. You do need a car, but I'm sure we were able to get to the theme parks in as much time (or less) than it took to use Disney transportation on property.
Let me know if there are any other questions you have. I loved the property, and have already booked our stay for our January 2011 alternative break trip.