In the "old" section of Eagle Crest (aka "resort side" as opposed to "Ridge side"), There is the River View Vista Estates, the Fairway Vista Views, and the VROA units. The VROA units are all 2bed/2bath and are in 4plex units with Golf Course view. The River View Vista Estates are at the back of the resort in tri-plex units. A 3bed/2bath on the ends of each tri-plex with a 2bed/2bath in the middle units. Each 3bed does indeed have a private hot tub on the deck. The ODD numbered units have a river view and the even numbered units have a golf course view. The exception is the units # 1 - 14. These units on Snowgoose Dr. are duplexes, and all have superb River views and are closest to the river. Units 4 & 5 are 2bed, the rest are 3 bedroom I believe. As you go higher in number from 15 - 59, the units get higher up on the bluff until around unit 41 you start to be so high above the river you have to lean over your deck and look through a lot of trees to see any of the river.
Fairway vista view estates are all located between holes # 9 & 10 on the original resort course, and so all have golf views. The VROA units are located by the original activity center. #301 - 324 have golf views, 201 - 244 have river views. There are more VROA units between holes # 7 & 11 w/ golf views, but I think these are all worldmark units. Worldmark also owns # 47 in RVVE, a 2bed/2bath.
As for which unit to request: If you want a river view, try first for # 1 - 14. If you can't get that, try to get the lowest odd numbered unit you can in River View Vista Estates. If you want a golf course view, I'd try to get a unit closest to the activity center if you're going in summer (that would be an RVE even unit) or the Fairway units if going in winter to be closer to the resort. But it's not a lot of difference either way, the main difference is if you want the River or the golf view.