The Unofficial Guide to WDW states that the better rooms are on the 4,5 and 6 toward the open end of the V (WL shaped like a very blocky V).
4000 to 4003,4169,500 to 5003,5166 to 5169,6000 to 6003 and 6166 to 6169 - dirrect frontal view of lake.
4005 to 4023,4147 to 4165,5005 to 5023,5147 to5165,6005 to6023 and 6147 to 6165 face courtyard.
even number rooms 5004 to 5030 and 6004 to 6030 - front a woods to the northwest of the lodge/MK.
odd # 5035 to 5041,5123 to 29,6035 to 6041 and 6123 to 6129 distant view lake, pools, garden.
book states the best rooms are odd #ed rooms 2531 to 2563 and 3531 to 3563.