For what it's worth, today we booked the Sheraton Vistana resort for a March 2010 stay. We booked a 1BR villa. I was told by a woman who answered the phone at the resort front desk that all sections of the resort with the 1BR (and 2BR) villas had been renovated except for a part of the Cascades section, and that was due to be completed in February 2010.
By the way, about a week ago I had my trusty AAA rep price out a 6-night stay at AllStarMusic family suites with 6-day park hoppers for my famly of 5, as well as trying it with 2 adjoining standard rooms (rather than the suite). Suite came to about $3100. Two adjoining rooms knocked it down to $2800 or thereabouts. Adding the standard dining plan for 2 adults, 1 junior and 2 children (3-9) added about $900 or so to that total.
Last night, I received an e-mail from Starwood indicating a special at Sheraton Vistana Resort for American Express cardholders. Typically my family enjoys staying on-site at Disney, but we had considered the Vistana resort a number of years ago, so I thought I'd click through to check the offer -- even though I remembered online reviews indicated that the Vistana resort was beginning to show its age. The Starwood/Amex offer was borderline absurd -- the all-in (taxes, charges, etc.) price for a 6-night stay in a 1BR villa was $450. Plus they throw in a $300 resort credit. Once I did a bit more research, I learned that renovation of all the villas was well underway, the reviews had been very positive, and the villa renovations were due to be completed before our visit. If we buy our park hopper tix at an "official" online discounter, the total comes to about $1800 -- a whopping $1000 savings over the on-site cost of hotel/tix, even with the AAA discount.
Still not written in stone, but if we head to Disney this March, we'll be trying out the (hopefully newly and completely renovated) Vistana resort villas.