I am guessing you are wanting to stay offsite? How nice of a place are you looking for? 3 years ago, we went on a very last minute, very low budget trip to WDW, and stayed at Best Western Lakeside Resort. It was less than five minutes to MK. We never used there transportation, but they had free shuttles to and from WDW, US, and International Dr.
The hotel itself was more than adequate- clean, quiet rooms, good sized w/ fridge and microwave, courteous staff, onsite restaurants/bars/store (also walking distance to several other dining options and a Walgreens in the front parking lot). The grounds were very well kept, 3 (heated) pool areas, kiddie pool and playground, mini golf. If you are looking for a decent place on a budget that has some transportation, I wouldn't hesitate to reccommend this hotel. (P.S. found it on kayak.com just now for $42 a night).