The Pool at The St. Regis Washington, D.C.
The St. Regis Washington, D.C. 
Gayot
Jetsetter
Gayot "A small fitness center is open 24 hours a day, and guests can use one of two nearby full-service gyms (for a fee), one of which has a lap pool"
Jetsetter "Guests can also access (for a $15 fee) the posh University Club, which holds an Olympic-sized pool and Sage Spa"
