Heatherwood Retirement Community in Burke Lake is OK and economical. Has basic assisted living facilities and services. Skilled nursing care is next door if needed.
http://rui.net/heatherwood/
Here is a lot of good independent information from the Fairfax County Department of Family Services:
http://www.fairfaxcounty.gov/dfs/olderadultservices/nursing-homes.htm
Directory of all Virginia nursing homes:
http://www.vdh.virginia.gov/OLC/Facilities/
This will let you compare multiple facilities in Virginia:
http://www.vhi.org/nursing_compare.asp
This provides inspection results and ratings of all nursing homes:
http://www.medicare.gov/nursinghomecompare/search.html
There are a bunch of other facilities to chose from - in all price ranges:
http://www.retirenet.com/location/communities/228-virginia/53-all-active-retirement-communities-and-homes?city=20171-herndon
http://www.caring.com/local/assisted-living-facilities-in-fairfax-county-virginia