People tend to have one of two preferences - close to epcot, which means if you go out near quiet pool (or even better the "not so secret" exit atvery end of resort), you can walk to epcot in literally 5 mins or less from your room, although I think most of the really near epcot rooms are technically garden view, not standard. At that end you also have a chance of limited fireworks view from room (and definitely will hear them-but muffled through wall.)
The other option (which is actually more common and even a specific option during online checkin) is to be close to transportation (ie, closer to yacht club end and away from epcot), so you have shorter walk to buses, restaurants, and storm along bay, which is at that end also.