We're really happy with our daycare in Oakton, but it's $340 a week. I think your price point is a little low for this area - but I wish you luck! Finding good daycare is super difficult!
I agree that price is low for Vienna. The lowest I found when I looked last year was Kidsdom Montessori which is at the intersection of Lawyers Rd and Hunters Mill Rd and that was $300 a week. 2011 rates could change though.
Re: Daycare in Vienna