We have stayed in the FW Cabins a couple of times and we have thoroughly enjoyed our stay. I believe they are the least expensive option for a full kitchen. Here are my thoughts on the typical 'cons' to the cabins...
Theming -- true there isn't 'real' theming, but we really like being in the middle of the forest -- it's very peaceful and quiet.
Convenience -- pools, arcades and prepared food can be a bit of a hike. This is true. I'd recommend renting a golf cart if you plan to enjoy all the amenities of FW. We never found the pools to be an uncomfortable walk -- and we've often been the only ones in the pool.
Buses -- the bus system at FW has not been at all bad in our experience; some people have experienced waits that they thought were too long. The buses go directly to the TTC just like any other resort. You can take a boat directly to MK.
On the positive side, the cabins are very peaceful and relaxing and quiet, you can park your car (if you have one) in your very own spot right in front of your cabin, housekeeping does the dishes (and all the usual things), you have a BBQ grill right outside your front door, the bedroom is separate from the rest of the cabin for napping kids, and the price can't be beat! So if you like the 'camping' atmosphere, you might give them a try.
We have also stayed in the villas at the Disney Institute. They are much more like an apartment in 'feel'. We only stayed there because it was back when you could take classes at the DI -- so it was convenient.
Have fun!
