WE never have a car in WDW. The transportation is great, IMO, even the buses if you don't have small children in strollers.
Three adults on a budget.....I would try CSR, if available for your dates, and go with business class if the budget allowed. Nice central resort, good bus service, lots of dining choices, comfortable rooms, extra amenities, awesome pool and hot tub, BC rooms are in a great location, price is pretty good for what you get at CSR.
If CSR is not available, POR in a preferred location is also a good choice. Nice boat ride to DS and Yeehaa Bob for fun entertainment.
If the budget stretches to a deluxe, either AKL or WL (depending upon the construction situation) are reasonably priced options.
If a value is necessary, then POP would work. Standard rooms are fine here.
Enjoy!