On the map, no mention of an Alitalia Club. But, see,
http://www.alitaliausa.com/informati...nges/index.htm
and click on "abroad."
Pop-up says
"WASHINGTON
SkyTeam Vip Lounge (Terminal B, opposite gate B20)
Opening hours: 05.30-19.30 SUN-FRI 05.30-18.30 SAT
Tel. + 1 703 661 06 75
Fax + 1 703 661 07 23"
I must say, I have never seen this club.