There are a lot of villa developments 'close to Disney', by close I mean 10-15 minutes away by car.
To be brutally honest, having stayed at many villas over the years you HAVE to have your own car to make it work, for me they are essential.
Not just for the parks but for supermarket visits and just getting around Orlando or Kissimmee etc
Sorry not being negative just villa and car go together I am afraid.
You may try finding an apartment, studio type accomodation closer to Disney perhaps and I agree having stayed at the Boardwalk that a DVC resort is an option, but would be much more expensive if for example you wanted to spend the whole holiday there.
Is renting a car a non-starter?